ALTUS AIR FORCE BASE, Okla. – Retired U.S. Air Force Maj. Cary Davidson, L-3 Communications C-17 Globemaster III simulator instructor, reviews international student pilot actions inside a C-17 simulator, Sept. 25. Davidson first began instructing students on the C-141 Starlifter when he was assigned to the 57th Airlift Squadron here in 1988. Twenty five years later, Davidson retired and came back to Altus to work for L-3 Communications as a C-17 simulator instructor. (U.S. Air Force photo by Airman 1st Class Levin Boland/Released)