ELLSWORTH AFB, S.D. – Tech. Sgt. Joseph Wengler, 28th Security Forces Squadron flight chief, fires an M-9 Beretta pistol at a target, Nov. 9. Sergeant Wengler prepares for the Global Strike Challenge, Nov. 13 through 16. The challenge pits missile and bomb crews, security forces, and maintainers from five Air Force Bases in head-to-head competitions as each seek to be recognized as the “best of the best.” (U.S. Air Force photo/Senior Airman Kasey Close)