With a lightning storm approaching, U.S. Army soldiers from Gunfighter Company, 1st Battalion, 506th Infantry Regiment, 4th Brigade Combat Team, provide security for the 1438th Engineer Company, Multi-Role Bridge, Missouri National Guard, as they construct a Mabey-Johnson bridge in the Khowst - Gardez Pass, Paktya province, Afghanistan, Sept. 2, 2013. (U.S. Army photo by Sgt. Justin A. Moeller, 4th Brigade Combat Team Public Affairs)