STANDING GUARD — U.S. Army Staff Sgt. David A. Hershberger, assigned to Charlie Company, 1st Battalion, 17th Infantry Regiment, 172nd Stryker Brigade Combat Team, stands guard on top of an infantry carrier vehicle outside a mosque in the Ad Hamyah district of Baghdad, Sept. 2, 2006, so Iraqi army soldiers from the 9th Iraqi Army can search it for ammunition caches. U.S. Navy photo by Petty Officer 2nd Class Eli J. Medellin