U.S. Army paratroopers from B Company, 3rd Battalion, 509th Parachute Infantry Regiment, 4th Brigade Combat Team, 25th Infantry Division, board a CH-53 'Chinook' prior to an air assault mission, at Forward Operations Base Kalsu, Iraq, on Aug. 21. The unit is conducting a raid on a suspected weapons cache in Sawarah, along the Tigris River, south of Baghdad, as part of Operation Marne Husky.