Executive Officer from Afghan National Army 2nd Candac 205th Corp, cross an aqueduct as Soldiers from the 1st Battalion, 24th Infantry Regiment, 1st Stryker Brigade Combat Team, 25th Infantry Division, perform a site survey to find the best area for checkpoint four during Operation Fairbanks in Qalat, Zabul Province, Afghanistan, Sept. 20, 2011. (U.S. Army photo by Sgt. 1st Class James Fidel / Released)