U.S. Air Force Master Sgt. Marvin Jimerson, 27th Special Operations Maintenance Squadron first sergeant and former basic military training technical instructor, puts cadets at attention Nov. 21, 2014, upon their arrival at Cannon Air Force Base, N.M. Junior Reserve Officer Training Corps cadets with Clovis, New Mexico high school were mentally and physically tested by an elite core of Air Commandos as part of a growing partnership with Cannon’s local community. (U.S. Air Force photo/Staff Sgt. Alexxis Mercer)