12th AF
U.S. Air Force Tech. Sgt. Jeffrey Kelley, left, observes while members of the Chilean air force perform preflight functions checks Dec. 3, 2014, in Chile. During a four-week training session in Chile, 12th Air Force (Air Forces Southern) and Chilean air force service members focused on perfecting maintenance procedures and the use of night vision goggles, while establishing a strong partnership. Kelley is an F-16 Fighting Falcon avionics instructor with the Detachment 12, 372nd Training Squadron. (U.S. Air Force photo/Staff Sgt. Adam Grant)