Defenders deployed
BAGRAM AIRFIELD, Afghanistan -- Staff Sgt. Scott Carpenter and his military working dog, Kane, search a line of vehicles Aug. 10, 2009. Air Force K-9 teams search more than 700 vehicles a day before the drivers are allowed to come on base. A Clarksburg, Mass., native, Sergeant Carpenter is a dog handler with the 455th Expeditionary Security Forces Squadron and is deployed from Peterson Air Force Base, Colo. (U.S. Air Force photo/Staff Sgt. J.G. Buzanowski)