Augmentees with the 633rd Security Forces Squadron grant access through the LaSalle Gate for visitors at Langley Air Force Base, Va., July 24, 2012. The U.S. Army Corps, working hand-in-hand with the 633rd Civil Engineer Squadron, will begin construction of a new, state-of-the-art Visitor Center in August, closing the gate for approximately six months. (U.S. Air Force photo by Tech. Sgt. Randy Redman/Released)