Staff Sgt. Francisco Velasquez, 332nd Expeditionary Maintenance Squadron aircraft structural maintenance craftsman, drills recesses in an aluminum patch allowing rivets to sit flush July 24 at Joint Base Balad, Iraq. The placement of the crack and thickness of metal determine whether the repair will be with a patch or sealant. Sergeant Velasquez is a native of Monroe, Mich., deployed from Little Rock Air Force Base, Ark. (U.S. Air Force photo/Staff Sgt. Phillip Butterfield)