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 in conjunction with National Police Week , an annual event held to remember fallen military and civilian defenders. (U.S. Air Force photo by Staff Sgt. Jeff Nevison)(RELEASED)