U.S. Army Col. Charles R. Hamilton, left, the commander of the 101st Sustainment Brigade, 101st Airborne Division, Task Force Lifeliner, and Master Sgt. Katherine E. Lawson-Best, second from left, a human resources administration noncommissioned officer in charge, serve meals during Christmas lunch at Bagram Airfield, Parwan province, Afghanistan, Dec. 25, 2013.