U.S. soldiers with the 1151st Engineer Company, 133rd Engineer Battalion, 87th Sustainment Brigade move trusses during the construction of B-hut living quarters on Forward Operating Base Lightning, Afghanistan Dec. 16, 2013. The 1151st Engineers are building living quarters on FOB Lightning for incoming soldiers from outlying FOBs. (U.S. Army photo by Spc. Charles M. Willingham/Released)