U.S. Air Force Chief Master Sgt. Trae King, 633rd Air Base Wing command chief, ensures U.S. Service members leave safely after being released from the Langley Transit Center at Langley Air Force Base, Va., Dec. 4, 2014. Joint Base Langley-Eustis built the transit center in less than one week to accommodate the U.S. service members who would be spending a 21-day controlled monitoring period there. (U.S. Air Force photo by Airman 1st Class Breonna Veal/ Released)