Empty bullet casings lay on the ground after a round of shooting during the 633d Security Forces Squadron shooting competition at Langley Air Force Base, Va., May 16, 2011. The shooting completion was held in conjunction with National Police Week and included participants from Hampton and Newport News police departments, Hampton park rangers, security forces, and Air Force Office of Special Investigations. (U.S. Air Force photo by Airman 1st Class Racheal Watson)(RELEASED)