Airmen from the 60th Aerial Port Squadron and members of the Army National Guard's 49th Police Brigade practice loading and sling loading vehicles on a CH-47 Chinook Oct. 14, 2015, at Travis Air Force Base, Calif. The units also practiced nighttime operations with the aid of night vision goggles. (U.S. Air Force photo/T.C. Perkins Jr.)

Airmen from the 321st Contingency Response Squadron and Soldiers from the 689th Rapid Port Opening Element offload cargo from a Mississippi Air National Guard C-17 Globemaster III on the flightline at Camp Shelby Joint Forces Training Center, Miss., during exercise Turbo Distribution Oct. 29, 2015. The U.S. Transportation Command exercise tested the Joint Task Force Port-Opening's ability to deliver and distribute cargo during humanitarian relief operations. The 321st CRS is from Joint Base McGuire-Dix-Lakehurst, N.J., and the 689th RPOE is from Joint Base Langley-Eustis, Va. (U.S. Air Force photo/Staff Sgt. Marianique Santos)

A tactical air control party Airman aims a weapon through a doorway while clearing a structure during special weapons and tactics training at Southern Nazarene University in Bethany, Okla. The class was instructed by the Oklahoma County Sheriff’s Office Oct. 26-Nov. 6, 2015. The Airman is assigned to the 146th Air Support Operations Squadron from the Will Rogers Air National Guard Base in Oklahoma City. (U.S. Air National Guard photo/Master Sgt. Andrew M. LaMoreaux)

This F-16A Fighting Falcon was last assigned to the 174th Attack Wing at Hancock Field Air National Guard Base, N.Y., as a ground maintenance trainer before it was retired from service and disassembled Nov. 5, 2015. The aircraft is set to be reassembled and placed at the main entrance of the New York National Guard headquarters in Latham. (U.S. Air National Guard photo/Tech. Sgt. Jeremy Call)

Maj. Charles Trickey, a 461st Flight Test Squadron F-35 Lightning II experimental test pilot, successfully fires a four-barrel 25 mm GAU-22/A Gatling gun while in flight Oct. 30, 2015, over China Lake Weapon Range, Calif. (U.S. Air Force photo/Chad Bellay)

An HH-60G Pave Hawk from the 33rd Rescue Squadron at Kadena Air Base, Japan, performs a rope-ladder recovery with Airmen from the 320th Special Tactics Squadron during an amphibious operations exercise Sept. 22, 2015, off the west coast of Okinawa, Japan. Special tactics Airmen are organized, trained and equipped to conduct high-risk combat operations. (U.S. Air Force photo/Senior Airman John Linzmeier)

Airmen deliver fuel to coalition bases in Iraq in support of Operation Inherent Resolve Dec. 16, 2015. OIR is the coalition intervention against the Islamic State of Iraq and the Levant. (U.S. Air Force photo/Tech. Sgt. Nathan Lipscomb)

An Afghan air force member jumps into the arms of U.S. Air Force Master Sgt. Daniel Prosymchak near Forward Operating Base Oqab, Kabul, Afghanistan, Dec. 13, 2015. Prosymchak is assigned to the Train, Advise, Assist Command-Air security forces and is deployed from Joint Base Charleston, S.C. (U.S. Air Force photo/Staff Sgt. Corey Hook)

The sun shines along the horizon as an aircraft taxies down a flightline during Global Thunder 2016, an exercise that took place Nov. 2-8, 2015, to test the readiness of air refueling wings at McConnell Air Force Base, Kan. (U.S. Air Force photo/2nd Lt. Krystal Jimenez)

Staff Sgt. Logan Pals, a 435th Construction Training Squadron pavements and construction equipment operator, sits in the seat of a bulldozer while waiting for gravel to be dumped Sept. 24, 2015, at Diyarbakir Air Base, Turkey. The 435th CTS has more than 10 construction vehicles that are used to dump, move, grade and roll gravel throughout the base. (U.S. Air Force photo/Airman 1st Class Cory W. Bush)

The Royal Australian Air Force completes the first fuel transfer with the air refueling boom from an RAAF KC-30A Multi Role Tanker Transport to a U.S. Air Force F-35A Lightning II Sept. 25, 2015, at Edwards Air Force Base, Calif. Refueling between the KC-30A and F-35A is an important step toward the KC-30A’s achievement of final operational capability and represents continued progress in the development of the F-35A. (Lockheed Martin courtesy photo/Jonathan Case)

Air Force firefighters rush into extreme temperatures to extinguish a fire during training at the 165th Airlift Wing in Garden City, Ga., Oct. 3, 2015. Firefighters from the 165th AW train to meet local and global protection needs and provide timely fire prevention education and protection to the wing, the Air Dominance Center and the airport tenants. (U.S. Air National Guard photo/Staff Sgt. Noel Velez)

Senior Airman James Vrtis, a 57th Operations Support Squadron airfield systems technician, descends a ground-to-air radio tower on Nellis Air Force Base, Nev., Oct. 6, 2015. Airfield systems specialists must periodically perform preventative maintenance inspections on ground-to-air radio towers, which stand as tall as 180 feet. (U.S. Air Force photo/Staff Sgt. Siuta B. Ika)

The Hill Air Force Base Honor Guard presents the colors during an F-35A Lightning II unveiling ceremony Oct. 14, 2015, at Hill AFB, Utah. The unveiling commemorated the beginning of a new era in combat airpower at the base. Ceremony attendees included military leaders, state and local dignitaries, industry partners and base personnel. (U.S. Air Force photo/Todd Cromar)

Capt. Thomas Bernard, a 36th Airlift Squadron C-130 Hercules pilot, performs a visual confirmation with night vision goggles during a training mission over Kanto Plain, Japan, Oct. 14, 2015. Yokota Air Base aircrews regularly conduct night flying operations to ensure they’re prepared to respond to a variety of contingencies throughout the Indo-Asia-Pacific region. (U.S. Air Force photo/Osakabe Yasuo)

A C-130 Hercules flies over Izu Peninsula, Japan, Oct. 14, 2015. Performing regular in-flight operations gives all related personnel real-world experience to stay prepared for contingency situations and regular operations. (U.S. Air Force photo/Airman 1st Class Elizabeth Baker)

Jane D. Hartly, the U.S. ambassador to France, Airman 1st Class Spencer Stone and his two friends speak at a press conference in Paris on Aug. 23, 2015, following a foiled attack on a French train. Stone was on vacation with his childhood friends, Army Spc. Aleksander Skarlatos and Anthony Sadler, when an armed gunman entered their train carrying an assault rifle, a handgun and a box cutter. The three men, with the help of a British passenger, subdued the gunman after his rifle jammed. (U.S. Air Force photo/Tech. Sgt. Ryan Crane)

A C-5M Super Galaxy taxies down the flightline prior to takeoff Aug. 17, 2015, at Dover Air Force Base, Del. Eighteen C-5Ms are assigned to Dover AFB. (U.S. Air Force photo/Roland Balik)

Air Force Chief of Staff Gen. Mark A. Welsh III comforts Jan Binnicker, widow of ninth Chief Master Sgt. of the Air Force James C. Binnicker, who was laid to rest in Arlington National Cemetery, Va., Aug. 14, 2015. Binnicker passed away March 21, in Calhoun, Ga. (U.S. Air Force photo/Senior Airman Preston Webb)

Secretary of the Air Force Deborah Lee James walks to a U-2S as Senior Airman Aaron Saenz, a 9th Physiological Support Squadron launch and recovery technician, carries the high-altitude pressure suit auxiliary equipment at Beale Air Force Base, Calif., Aug. 11, 2015. The specialized pressure suit allows U-2S pilots to safely fly at altitudes reaching 70,000 feet. James visited Beale AFB to receive a firsthand perspective of high-altitude intelligence, surveillance and reconnaissance from collection to dissemination. (U.S. Air Force photo/Senior Airman Dana J. Cable)

Secretary of the Air Force Deborah Lee James enjoys having photos taken with the Airmen she meets during her visits around the Air Force. Meeting and talking with Airmen is important to James because it allows her to speak directly with them, hear their concerns and answer any questions they may have. (U.S. Air Force photo/Master Sgt. Jeffrey Allen)

Staff Sgt. Trevor Alexis, the 374th Civil Engineer Squadron fire protection NCO in charge of training, waits to enter a flashover trainer Aug. 4, 2015, at Yokota Air Base, Japan. Flashover, a near-simultaneous ignition of many objects in a confined room, creates a dangerous situation where both heat and smoke continue to increase until combustion. Simulating a flashover fire in a confined room with limited ventilation enables a trainer to educate and prepare firefighters to recognize and react to a potentially dangerous situation. (U.S. Air Force photo/Airman 1st Class Delano Scott)

Maj. Jason Curtis, Thunderbird 5, and Capt. Nicholas Eberling, Thunderbird 6, fly back from Minden, Nev., Aug. 25, 2015. (U.S. Air Force photo/Senior Airman Jason Couillard)

Staff Sgt. Gregory Johnson, of the 386th Expeditionary Medical Support Squadron, removes plaque from a military working dog’s teeth during a dental cleaning in Southwest Asia, Aug. 27, 2015. MWD FFrida is with the 386th Expeditionary Security Forces Squadron. MWDs receive routine medical care so they can aid their human military partners in the fight against the Islamic State of Iraq and the Levant terrorist group. (U.S. Air Force photo/Senior Airman Racheal E. Watson)

Staff Sgt. Saber Barrera, with 386th Expeditionary Logistics Readiness Squadron firetruck and refueling maintenance, works with a co-worker to replace an engine starter in Southwest Asia, Aug. 27, 2015. The Airmen support Operation Inherent Resolve, which is intended to reflect the deep commitment of the U.S. and partner nations in the region and around the globe to eliminate the Islamic State of Iraq and the Levant terrorist group and the threat imposed on Iraq. (U.S. Air Force photo/Senior Airman Racheal E. Watson)

Airman 1st Class Ruel Abastas, a 90th Force Support Squadron chef, decorates a plate with chocolate syrup for a dessert dish during an "Iron Chef" competition at the Chadwell Dining Facility on F.E. Warren Air Force Base, Wyo., Aug. 27, 2015. Chefs from the 90th FSS had to create an entree incorporating the secret ingredient, cheese crackers with peanut butter, along with a dessert dish within the hour time limit. (U.S. Air Force photo/Lan Kim)

A Florida Air National Guard Airman from an aerospace propulsions flight installs a stator generator on an F100 Pratt and Whitney 200E jet engine Sept. 3, 2015, at the 125th Fighter Wing in Jacksonville, Fla. (U.S. Air Force photo/Tech. Sgt. Troy Anderson)

An A-10 Thunderbolt II flies over the Baltic Sea on Sept. 4, 2015. The engagement included the deployment of eight A-10s from the 303rd Fighter Squadron at Whiteman Air Force Base, Mo., to Amari Air Base, Estonia. The U.S. is committed to ongoing reassurance efforts to NATO allies in Eastern Europe. (U.S. Air Force photo/Tech. Sgt. Jason Robertson)

An F-16 Fighting Falcon assigned to the 555th Expeditionary Fighter Squadron takes off on a combat sortie from Bagram Airfield, Afghanistan, Sept. 6, 2015. The F-16 is a multi-role fighter aircraft that is highly maneuverable and has proven itself in air-to-air and air-to-ground combat. (U.S. Air Force photo/Tech. Sgt. Joseph Swafford)

Pope Francis, escorted by President Barack Obama, greets Cardinal Donald W. Wuerl, the archbishop of Washington, and Maj. Gen. Darryl Burke, the Air Force District of Washington commander, at Joint Base Andrews, Md., Sept. 22, 2015. The event marked Pope Francis’ first visit to the U.S. (U.S. Air Force photo/Tech. Sgt. Robert Cloys)

A P-51 Mustang flies over Joint Base Anacostia-Bolling, Washington, D.C., during a military tattoo Sept. 16, 2015. (U.S. Air Force photo/Airman 1st Class Philip Bryant)

Chief Master Sgt. of the Air Force James A. Cody thanks Air Force Chief of Staff Gen. Mark A. Welsh III for his exceptional service by presenting him with an invitation to an Order of the Sword ceremony, following his "Enlisted Force Update" at the Air Force Association's Air and Space Conference and Technology Exposition Sept. 16, 2015, in Washington, D.C. (U.S. Air Force photo/Scott M. Ash)

Capt. Boston McClain, a 61st Airlift Squadron co-pilot, embraces his wife after returning from deployment Sept. 15, 2015, at Little Rock Air Force Base, Ark. Little Rock Airmen specialize in combat airlift and expeditionary support downrange. (U.S. Air Force photo/Senior Airman Scott Poe)

F-16 Fighting Falcons from the 408th Fighter Squadron at Spangdahlem Air Base, Germany, conduct aerial refueling with a KC-135 Stratotanker from the 100th Air Refueling Wing at Royal Air Force Mildenhall, England, during a training sortie Sept. 9, 2015, over the U.K. (U.S. Air Force photo/Tech. Sgt. Jason Robertson)

Senior Airman Brendan Kennedy, a 1st Combat Communications Squadron satellite communications technician, calibrates an L3 Panther during Baltic Operations 2015 June 10, 2015, at Powidz Air Base, Poland. During rotational deployments such as BALTOPS, each Airman on the communications team is selected for their specific skill set. (U.S. Air Force photo/Senior Airman Michael Battles)

A U.S. Air Force B-52 Stratofortress flies with Swedish Saab Gripens during Baltic Operations 2015. Baltic Operations is an annual multinational exercise designed to enhance flexibility and interoperability, as well as demonstrate resolve among allied and partner forces to defend the Baltic region. (U.S. Navy photo)

Chief Master Sgt. of the Air Force James A. Cody meets with Airmen during an all call June 15, 2015, at Ramstein Air Base, Germany. Cody answered Airmen’s questions regarding Air Force standards, new processes and entitlements. (U.S. Air Force photo/Airman 1st Class Larissa Greatwood)

Retired Staff Sgt. Daniel Crane participates in the 100-meter sprint during the 2015 Department of Defense Warrior Games at the National Museum of the Marine Corps in Quantico, Va., June 23, 2015. The Warrior Games featured athletes from throughout the DOD who compete in Paralympic-style events for their respective military branches. (U.S. Marine Corps photo/Lance Cpl. Terry W. Miller Jr.)

A KC-135R Stratotanker rests on the flightline at Roland R. Wright Air National Guard Base, Utah, June 25, 2015. The aircraft's principal mission is air refueling, which enhances the Air Force's capability to accomplish its primary missions of global reach and global power. (U.S. Air National Guard photo/Senior Airman Colton Elliott)

Tech. Sgt. Matthew Bingaman, a 386th Expeditionary Civil Engineer Squadron explosive ordnance disposal technician, returns from a manual approach to an improvised explosive device training scenario June 25, 2015, in Southwest Asia. Even as a 16-year EOD veteran, Bingaman continually trains to safely handle live explosives. (U.S. Air Force photo/Tech. Sgt. Brittany E. Jones)

Capt. Ross Farling, a C-130 Hercules pilot from the 123rd Airlift Wing, hugs his daughters during a homecoming ceremony in Louisville, Ky., July 4, 2015. Farling was among 39 guardsmen who returned from a deployment to the Persian Gulf region, where they supported Operation Freedom's Sentinel. (U.S. Air National Guard photo/Maj. Dale Greer)

Members of the 122nd Fighter Wing fire department battle a simulated aircraft fire July 22, 2015, at the Combat Readiness Training Center in Alpena, Mich. The 122nd FW is based at Fort Wayne, Ind. (U.S. Air National Guard photo/Staff Sgt. William Hopper)

Senior Airman Michael C. Dancona and Senior Airman Dominic Surinaga, both members of the 106th Rescue Wing Honor Guard, conduct services at Calverton National Cemetery July 22, 2015. As part of their daily work, the 106th Honor Guard performs funeral services at military burial grounds throughout New York. (New York Air National Guard photo/Staff Sergeant Christopher S. Muncy)

A CV-22B Osprey assigned to the 7th Special Operations Squadron performs an aerial display of its capabilities during the Royal International Air Tattoo at Royal Air Force Fairford, England, July 19, 2015. The U.S. participation in RIAT highlighted the strength of America’s commitment to the security of NATO and its allies. (U.S. Air Force photo/Tech. Sgt. Chrissy Best)

U.S. and Bulgarian paratroopers jump from a C-130J Super Hercules during a halo jump over Plovdiv, Bulgaria, July 14, 2015. During the three-hour formation flight, which consisted of two U.S. Air Force C-130Js and one Bulgarian air force C-27, more than 50 paratroopers exited the aircraft and landed near Plovdiv Airport. (U.S. Air Force photo/Senior Airman Nicole Sikorski)

The Sodium Guidestar at the Air Force Research Laboratory Directed Energy Directorate's Starfire Optical Range. Researchers with AFRL use the Guidestar laser for real-time, high-fidelity tracking and imaging of satellites too faint for conventional adaptive optical imaging systems. The range’s world-class adaptive optics telescope is the second largest telescope in the Defense Department. (Courtesy photo)

A security forces Airman plunges into the combat water survival test at the U.S. Air Force Academy, Colo., July 17, 2015. The event was part of a daylong course for Airmen across the Front Range area to determine if they are physically and mentally ready to attend the U.S. Army Pre-Ranger Training Assessment Course, a prerequisite to attending the U.S. Army Ranger School at Fort Benning, Ga. (U.S. Air Force photo/Jason Gutierrez)

An F-35 Lightning II assigned to the 61st Fighter Squadron at Luke Air Force Base, Ariz., takes off July 28, 2015. Since 2010, the F-35 has flown more than 30,000 hours. (U.S. Air Force photo/Staff Sgt. Staci Miller)

Senior Airman Paul Cauge, a 274th Air Support Operations Squadron joint terminal attack controller, uses a laser rangefinder designator for a close air support training mission July 29, 2015, at Grayling Air Gunnery Range in Grayling, Mich., during Northern Strike 2015. The annual exercise involved hundreds of military personnel from 20 states, as well as Canada, Latvia, Poland and Australia. (U.S. Air National Guard photo/Master Sgt. Scott Thompson)

Staff Sgt. Fred Frizzell, an 823rd Expeditionary RED HORSE Squadron pavements and construction equipment operator, works a drilling rig at a well site in Brisas del Mar, Honduras, July 30, 2015. Frizzell monitored the drilling rig during the development phase of the well site -- a process that involved blowing high-pressure air through the screens at the bottom of the well, removing any excess sediment buildup around the screens. This was the second well site constructed during humanitarian exercise New Horizons Honduras 2015. (U.S. Air Force photo/Capt. David J. Murphy)

An F-22A Raptor from the 95th Fighter Squadron at Tyndall Air Force Base, Fla., flies over the Nevada Test and Training Range during Red Flag 15-3 at Nellis AFB, Nev., July 31, 2015. Red Flag gives aircrews and air support operations service members from various airframes, military services and allied countries an opportunity to integrate and practice combat operations. (U.S. Air Force photo/Senior Airman Brittany A. Chase)

Airman 1st Class Alexander Hershberger takes inventory of storage bins Jan. 28, 2015, on Ramstein Air Base, Germany. During an average week, the 86th Logistics Readiness Squadron’s individual protective equipment team processes about 130 to 150 service member’s individual protective gear, ranging from bases all over U.S. Air Forces in Europe and Air Forces Africa. Hershberger is an IPE assigned to the 86th LRS. (U.S. Air Force photo/Airman 1st Class Michael Stuart)

Two Bangladesh air force (BAF) F-7BG Defenders, a BAF C-130B Hercules, and two U.S. Air Force C-130H Hercules aircraft prepare to take off Jan. 28, 2015, from BAF Base Bangabandhu, Bangladesh, during exercise Cope South. Cope South is a Pacific Air Forces-sponsored, bilateral tactical airlift exercise conducted in Bangladesh, with a focus on cooperative flight operations, day and night low-level navigation, tactical airdrop, and air-land missions as well as subject matter expert exchanges in the fields of operations, maintenance and rigging disciplines. The C-130H is assigned to the 374th Airlift Wing at Yokota Air Base, Japan. (Courtesy photo/Bangladesh air force)

A B-52H Stratofortress flies during exercise Cope North 15, Feb. 17, 2015, off the coast of Guam. During the exercise, the U.S., Japan and Australia air forces worked on developing combat capabilities enhancing air superiority, electronic warfare, air interdiction, tactical airlift and aerial refueling. The B-52H is assigned to the 96th Expeditionary Bomb Squadron. (U.S. Air Force photo/Tech. Sgt. Jason Robertson)

U.S. Air Force, Japan Air Self-Defense Force and Royal Australian air force aircraft fly in formation during Cope North 15, Feb. 17, 2015, off the coast of Guam. During the exercise, the U.S., Japan and Australia air forces worked on developing combat capabilities enhancing air superiority, electronic warfare, air interdiction, tactical airlift and aerial refueling. (U.S. Air Force photo/Tech. Sgt. Jason Robertson)

Members of the U.S. Air Forces in Europe Band interact with the crowd during the Fasching parade Feb. 17, 2015, in Ramstein-Miesenbach, Germany. The USAFE Band and approximately 1,400 other participants marched in the parade for more than two hours, entertaining the crowd. (U.S. Air Force photo/Senior Airman Timothy Moore)

Students of the 364th Training Squadron's electrical systems course practice climbing power poles as part of a familiarization and trust exercise with the safety equipment Feb. 3, 2015, at Sheppard Air Force Base, Texas. They spent an extended period suspended to simulate a lengthy installation or repair as part of the training.

A B-2 Spirit makes a final approach before landing during Red Flag 15-1 Feb. 6, 2015, at Nellis Air Force Base, Nev. B-2s bring unmatched long-range, precision-strike capability options to combatant commanders around the world. The B-2 is assigned to the 393rd Bomb Squadron at Whiteman AFB, Mo. (U.S. Air Force photo/Senior Airman Thomas Spangler)

Tech. Sgt. Uwemediimo Essien fires a .50-caliber machine gun at simulated enemy targets while flying over Grand Bay Bombing and Gunnery Range Feb. 19, 2015, at Moody Air Force Base, Ga. The side-mounted, .50-caliber machine gun is the HH-60G Pave Hawk’s primary form of defense. Essien is a 41st Rescue Squadron aerial gunner. (U.S. Air Force photo/Senior Airman Ryan Callaghan)

Pararescue jumpers and combat rescue officers conduct a search and rescue response during Hurricane Katrina-like flood training March 8, 2015, in Perry, Ga. The four-day exercise used HH-60 Pave Hawks and MV-22 Ospreys for simulated scenarios that included earthquake collapsed buildings, vehicle-borne improvised explosive devices detonating, and mass casualty responses. The pararescue jumpers and rescue officers are from the 920th Rescue Wing at Patrick Air Force Base, Fla. (U.S. Air Force photo/Staff Sgt. Kelly Goonan)

Tech. Sgt. Timothy Cotterall, an Air National Guard emergency manager, is decontaminated following attempts to identify multiple biological contaminants in a simulated lab during a Global Dragon training event on March 18, 2015. Held at the Guardian Centers of Georgia, Global Dragon Deployment For Training provides a refresher course for Airmen, allowing them to put their skills to use to identify live chemical, biological, radiological and nuclear agents and materials. Air National Guard emergency management technicians from more than 20 individual units participated in Global Dragon. Cotterall is a member of the 137th Air Refueling Wing in New Jersey. (New York Air National Guard / Staff Sgt. Christopher S. Muncy / released)

Master Sgt. Erick Lizarraga, an 18th Civil Engineer Squadron structural maintenance craftsman, entertains local youth at South Tinh Phong Primary School, Quang Ngai Province, Vietnam, during an engineering project March 26, 2015. Efforts undertaken during Operation Pacific Angel 2015 help militaries across the Pacific improve and build relationships in a wide spectrum of civic operations, which bolster each nation's capacity to respond and support future humanitarian assistance and disaster relief operations. (U.S. Air Force photo/Staff Sgt. Tong Duong)

Twelve KC-135 Stratotankers from the 909th Air Refueling Squadron taxi onto the runway during exercise Forceful Tiger on Kadena Air Base, Japan, April 1, 2015. During the aerial exercise, the Stratotankers delivered 800,000 pounds of fuel to approximately 50 aircraft. (U.S. Air Force photo/Staff Sgt. Marcus Morris)

Several C-130J Super Hercules assigned to the 317th Airlift Group at Dyess Air Force Base, Texas, help U.S. Army and British paratroopers perform a static line jump at Holland Drop Zone in preparation for Combined Joint Operational Access Exercise 15-01 at Fort Bragg, N.C., April 11, 2015. This was the largest exercise of its kind held at Fort Bragg in nearly 20 years and demonstrated interoperability between the U.S. Air Force, Air National Guard, Royal Air Force, U.S. Marine Corps, U.S. Army and British Army. (U.S. Air Force photo/Staff Sgt. Sean Martin)

Melissa Gonzales, an Air Force Wounded Warrior athlete, shares a moment with her service dog, Bindi, after swimming laps during the fourth day of an introductory adaptive sports and rehabilitation camp at Eglin Air Force Base, Fla., April 16, 2015. The Department of Defense’s military adaptive sports program enhances warrior recovery by engaging wounded, ill and injured service members in ongoing, daily adaptive activities, based on their interest and ability. (U.S. Air Force photo/Samuel King Jr.)

Combat controllers from the 21st Special Tactics Squadron fast-rope from a CV-22 Osprey during Emerald Warrior near Hurlburt Field, Fla., April 21, 2015. Emerald Warrior is the Defense Department's only irregular warfare exercise, allowing joint and combined partners to train together and prepare for real-world contingency operations. (U.S. Air Force photo/Staff Sgt. Jonathan Snyder)

More than 1,000 Guard and Reserve Airmen had the opportunity to listen to Air Force Chief of Staff Gen. Mark A. Welsh III speak April 11, 2015, about key issues affecting the Air Force during a visit to Tinker Air Force Base, Okla. (U.S. Air Force photo/Staff Sgt. Caleb Wanzer)

An MQ-1 Predator and an MQ-9 Reaper assigned to the 432nd Aircraft Maintenance Squadron remain ready for their next mission at Creech Air Force Base, Nev. The two aircraft have provided intelligence, surveillance and reconnaissance during Operations Iraqi Freedom and Enduring Freedom. (U.S. Air Force photo/Staff Sgt. Vernon Young Jr.)

Maj. Bishane, a 432nd Aircraft Maintenance Squadron MQ-9 Reaper pilot, controls an aircraft from Creech Air Force Base, Nev. Remotely piloted aircraft pilots work closely with intelligence officers, sensor operators and maintainers to complete mission objectives. RPA personnel deal with the stressors of deployed service members while maintaining the normalcy of their day-to-day lives through programs designed to enhance communication skills, family and spiritual growth. (U.S. Air Force photo/Staff Sgt. Vernon Young Jr.)

Staff Sgt. Arin Vickers, assigned to the 435th Supply Chain Operations Squadron, is greeted by her dog when she arrives at an airport USO in St. Louis on May 6, 2015. Vickers was gone for six months, and her friends and family were there to greet and surprise her by bringing along Baxter. (U.S. Air Force photo/Airman 1st Class Erica Crossen)

Staff Sgt. Joseph Pico, a security forces Airman with the 106th Rescue Wing, conducts night-firing training at the Suffolk County Police Range in Westhampton Beach, N.Y., May 7, 2015. During the training, Airmen learned small-group tactics, how to use their night vision gear and trained with visible and infrared designators. (New York Air National Guard photo/Staff Sgt. Christopher S. Muncy)

Airmen from the 2nd Aircraft Maintenance Squadron load weapons onto a B-52H Stratofortress during an exercise on Minot Air Force Base, N.D., May 7, 2015. The exercise provided training opportunities for forces to deter and, if necessary, defeat a military attack against the U.S. (U.S. Air Force photo/Senior Airman Kristoffer Kaubisch)

Tech. Sgt. Bruce Ramos, a Detachment 1, 1st Special Operations Group radio operator, raises an American flag from an MC-130P Combat Shadow while it taxies at Hurlburt Field, Fla., May 15, 2015. The final two MC-130Ps in the Air Force landed for the last time at Hurlburt Field in front of more than 400 people, and their last flight was to the boneyard at Davis-Monthan Air Force Base, Ariz., June 1, 2015. (U.S. Air Force photo/Senior Airman Jeff Parkinson)

The Air Force and its mission partners successfully launched the AFSPC-5 mission aboard the Space and Missile Systems Center procured United Launch Alliance Atlas V launch vehicle at Cape Canaveral Air Force Station, Fla., May 20, 2015. The Atlas V rocket carried into low Earth orbit an X-37B Orbital Test Vehicle, marking the fourth space flight for the X-37B program. (Courtesy photo/United Launch Alliance)

The U.S. Air Force Academy’s Class of 2015 tosses their hats in celebration as the Thunderbirds roar over Falcon Stadium in Colorado Springs, Colo., May 28, 2015. Over 800 cadets graduated and became second lieutenants. Secretary of the Air Force Deborah Lee James addressed the graduates during the ceremony. (U.S. Air Force photo/Liz Copan)

Marine Corps Hospital Corpsman Melissa Irvin, a 1st Dental Battalion dental corpsman from Camp Pendleton, Calif., carries a box of medical supplies to Unggai Primary School, where medical professionals are setting up during Pacific Angel 15-4 at Eastern Highlands, Papua New Guinea, May 29, 2015. Efforts undertaken during Pacific Angel help multilateral militaries in the Pacific improve and build relationships across a wide spectrum of civic operations, which bolsters each nation’s capacity to respond and support future humanitarian assistance and disaster relief operations. (U.S. Air Force photo/Staff Sgt. Marcus Morris)

A security forces Airman secures the outside of a hardened facility after neutralizing the opposing force during a combat training course on Ramstein Air Base, Germany, May 30, 2015. The Battlefield Leaders Assaulter Course, Integrated Combat Essentials is designed to teach security forces members from multiple countries advanced tactics and shooting skills for use in the event of a base security breach. (U.S. Air Force photo/Tech. Sgt. Ryan Crane)

A B-1B Lancer takes off from Al Udeid Air Base, Qatar, to conduct combat operations April 8, 2015. Al Udeid AB is a strategic coalition base that supports over 90 combat and support aircraft and houses more than 5,000 military personnel. (U.S. Air Force photo/Senior Airman James Richardson)

Two F-15E Strike Eagles wait to receive fuel from a KC-135R Stratotanker Jan. 23, 2015, on their way to Nellis Air Force Base, Nev., in support of Red Flag 15-1. The exercise, featuring aircraft from 21 Air Force squadrons, offers realistic combat training involving the air, space and cyber forces of the U.S. and its allies. The F-15s are assigned to the 4th Fighter Wing and the KC-135R is assigned to the 916th Air Refueling Wing. (U.S. Air Force photo/Airman 1st Class Aaron J. Jenne)

Capt. Brent Golden taxies an F-35A Lightning II at Nellis Air Force Base, Nev., Jan. 15, 2015. The F-35 that Golden, a 16th Weapons Squadron instructor, flew is the U.S. Air Force Weapons School’s first assigned F-35. (U.S. Air Force photo/Staff Sgt. Siuta B. Ika)

Airman 1st Class Jacob Wilson, a member of the U.S. Air Force Honor Guard, rests with his M1 Garand with a fixed bayonet during honor guard drill team training Jan. 13, 2015, at Joint Base Anacostia-Bolling, Md. While practicing drill movements, trainees risk getting cut with the 11-inch bayonet. (U.S. Air Force photo/Senior Airman Nesha Humes)

Special Tactics Airmen from the 24th Special Operations Wing jump out of an MC-130H Talon II at Hurlburt Field, Fla., Jan. 7, 2015. The Airmen were from various special tactics career fields, including special operations weathermen, combat controllers, pararescuemen and tactical air control parties. The 24th SOW’s mission is to provide Special Tactics forces for rapid global employment to enable airpower success. (U.S. Air Force photo/Senior Airman Christopher Callaway)

A U-2S from Beale Air Force Base, Calif., prepares to land at Royal Air Force Fairford, England, June 9, 2015. U-2S pilots have a small margin of space to effectively land the plane without causing damage to the aircraft. (U.S. Air Force photo/Staff Sgt. Jarad A. Denton)

Members of the 354th Fighter Wing inspection team walk toward first responders Jan. 26, 2015, during a major accident response exercise at Eielson Air Force Base, Alaska. The MARE tested first responders’ skills in a controlled environment to give them confidence in handling real-world situations. (U.S. Air Force photo/Staff Sgt. Joshua Turner)

Airmen from the 28th Maintenance Squadron perform maintenance on a B-1B Lancer prior to takeoff Jan. 7, 2015, at Ellsworth Air Force Base, S.D. Airmen from the 28th MXS work in various weather conditions yearlong to keep all B-1s on Ellsworth AFB mission ready. (U.S. Air Force photo/Airman 1st Class Rebecca Imwalle)

Members of the 437th Airlift Wing at Joint Base Charleston, S.C., conduct a multi-ship C-17 Globemaster III formation during Crescent Reach 15 on May 21, 2015. The exercise tested and evaluated JB Charleston's ability to launch a large aircraft formation in addition to processing and deploying duty passengers and cargo in response to a simulated crisis abroad. (U.S. Air Force photo/Staff Sgt. Corey Hook)

Air traffic controllers from the 51st Operations Support Squadron track air traffic on a radar during Vigilant Ace 16 at Osan Air Base, South Korea, Nov. 2, 2015. Operations performed by the base's air traffic controllers, both in exercises and real-world, are vital to the safe conduct of all military and civilian aircraft occupying the airspace in and around Osan AB and Suwon. (U.S. Air Force photo/Staff Sgt. Amber Grimm)

An F-16 Fighting Falcon from the 80th Fighter Squadron at Kunsan Air Base, South Korea, takes off at Jungwon AB, South Korea, during Buddy Wing 15-6 on July 8, 2015. Buddy Wing exercises are conducted multiple times throughout the year to sharpen interoperability between U.S. and South Korean forces so, if the need arises, they are always ready to fight as a combined force. (U.S. Air Force photo/Staff Sgt. Nick Wilson)

An F-22 pilot from the 95th Fighter Squadron based out of Tyndall Air Force Base, Fla., gets situated in his aircraft prior to taking off from Amari Air Base, Estonia, Sept. 4, 2015, during a brief forward deployment. The F-22s have previously deployed to both the Pacific and Southwest Asia for Airmen to train in a realistic environment while testing partner nations' ability to host advanced aircraft like the F-22. (U.S. Air Force photo/ Tech. Sgt. Ryan Crane)

Chief Master Sgt. of the Air Force James Cody speaks to members of the 18th Communications Squadron, July 8, 2015, on Kadena Air Base, Japan. As part of his ongoing initiative to engage enlisted Airmen stationed around the globe, the chief will be continuing his tour through the Pacific Air Forces once he leaves Kadena. (U.S. Air Force photo by Airman 1st Class John Linzmeier)

A Royal Netherlands Air Force F-16 Fighting Falcon flies a training mission over Tucson, Ariz. (U.S. Air Force photo/Master Sgt. Jeffrey Allen)