Airman 1st Class Christie Cooper (left) and Senior Airman John Brackens, 9th Security Forces Squadron patrolmen, lead a flight of wingmen using riot shields during training at Beale Air Force Base, Calif., Jan. 25, 2013. The 9th SFS Bravo Flight is training to respond to civil disturbances. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)