6/26/2012 - Tech. Sgt. Chad Marx, an aircraft structural maintenance craftsman assigned to the 931st Maintenance Squadron, 931st Air Refueling Group, McConnell Air Force Base, Kan., tightens a wingnut draw cleco in order to clamp together the sheet metal frame for an aircraft galley, June 26, 2012. The draw cleco will temporarily hold the frame together until the pieces are permanently fastened with rivets. (U.S. Air Force photo by 1st Lt. Zach Anderson)