U.S. Air Force Senior Airmen Corie Flores, left, and Webster Gadison, right, 633rd Security Forces Squadron patrolmen, practice Krav Maga April 7, 2012, during a 7-day joint forces course provided at Langley Air Force Base, Va. Krav Maga is a noncompetitive eclectic self-defense system developed in Israel that involves striking techniques, wrestling and grappling. (U.S. Air Force photo by Airman 1st Class Teresa Cleveland/Released)