Air Force Master Sgt. Onyx Banez, an avionics integrated technician from the 452nd Maintenance Squadron, March Air Reserve Base, Calif., verifies the alignment of the telescope of a Display Unit Test Set (DUTS) while testing a Head-Up Display (HUD) of a C-17 Globemaster III cargo aircraft at March Air Reserve Base, Calif. Avionics technicians install, maintain and repair electronic and electrical systems on all types of aircraft and they also maintain a high degree of readiness here to deploy worldwide to support wartime and contingency operations, and operations other than war in support of national interests and objectives. (U.S. Air Force photo by Val Gempis)