U.S. Deputy Secretary of Defense Ashton B. Carter (center) shares a light moment with U.S. Army Col. William Nuckols, Tactical Action Center-1, chief of staff (left) and Brig. Gen. Ronald Lewis, the 101st Airborne Division's deputy commanding general (right), at Forward Operating Base Gamberi, May 13, 2013. During his visit, Carter had a round-table discussion with 4th Brigade Combat Team, 1st Cavalry Division, senior leadership and the commander of the Afghan National Army 201st Corps. (U.S. Army photo by Staff Sgt. Richard Andrade, Task Force Long Knife Public Affairs)