U.S. Marine Corps Captain Ronald Blaze, left, Norfolk Naval Station Security Forces Unit executive officer, warms up with U.S. Air Force Senior Airman Corie Flores, right, 633rd Security Forces Squadron patrolman, during a Krav Maga course at Langley Air Force Base, Va., April 7, 2012. During the course students are taught to respond to attacks in the quickest and most efficient way. (U.S. Air Force photo by Airman 1st Class Teresa Cleveland/Released)