Col. Andrew Hanson, 51st Fighter Wing commander, escorts Maj. Gen. Choi, Geyn Young, Republic of Korea air force Air Mobility Reconnaissance Command commander, during his immersion tour at Osan Air Base, ROK, Feb. 1, 2016. Choi was briefed on the individual capabilities and missions of the F-16 Fighting Falcon, A-10 Thunderbolt II and U-2 Dragon Lady. (U.S. Air Force photo by Staff Sgt. Amber Grimm/Released)