ELLSWORTH AFB, S.D. – Staff Sgt. Tyson Steiger, 28th Security Forces Squadron assistant unit deployment manager, calculates the score of an Airman shooting, Nov. 9. Sergeant Steiger is part of a seven person team who will be participating in 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)