Senior Airman Tyler Wiseman and Airman 1st Class Steven Barnosky, 633d Security Forces Squadron canine handlers, perform rucksack push-ups during the 633d Security Forces Squadron Strong Team Competition at Langley Air Force Base, Va., May 18, 2011. The competition was held as part of National Police Week, in order to honor military and civilian defenders. (U.S. Air Force photo by Staff Sgt. Jeff Nevison)(RELEASED)