CAMP BUCCA, Iraq (AFPN) -- Staff Sgt. Frank Woznick (right) checks the accuracy of .50-caliber machine gun fire by Senior Airman Jeffrey Polzin. The 586th Expeditionary Security Forces Squadron troops were conducting a live-fire test here. The squadron is responsible for base defense, force protection and convoy security at this Army base. Sergeant Woznick is deployed from Andrews Air Force Base, Md. Airman Polzin is deployed from Vance AFB, Okla. (U.S. Air Force photo by Capt. Michael G. Johnson)