The 3rd Cavalry Regiment commander Col. Cameron Cantlon (left) and 3rd Brigade Combat Team, 101st Airborne Division (Air Assault) Commander Col. J.B. Vowell pose for a photo following the casing and uncasing ceremony held at Tactical Base Gamberi Feb. 15, 2015. The ceremony marked the end of mission for 3d CR and assumption of responsibility for 3rd BCT for the advisory mission and force protection of troops assigned to Train, Advise, Assist Command – East in eastern Afghanistan. (U.S. Army photo by Capt. Jarrod Morris, TAAC-E Public Affairs)(Released)