Firefighters from the 51st Civil Engineer Squadron help South Korean air force firefighters and members of the Songtan fire station with their fire sweeping techniques on a simulated fuel fire during a training exercise Aug. 26, 2015, at Osan Air Base, South Korea. During emergencies and humanitarian assistance operations, a strong relationship between first responders is vital to ensuring safety for the entire community. (U. S. Air Force photo/Staff Sgt. Benjamin Sutton)