SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Airman 1st Class Corintian Koger, 606th Air Control Squadron theater deployable communications from Tuscumbia, Ala., aims down the sights of his M16 rifle during a combat readiness training (CRT) course April 17, 2013. The CRT helped refresh some of the knowledge the Airmen received in basic training and prepared them for real-world mission taskings. (U.S. Air Force photo by Airman 1st Class Kyle Gese/Released)