1/28/2013 - A 9th Security Force Squadron patrolman stands in front of a riot shield in preperation for civil disturbace training at Beale Air Force Base, Calif., Jan. 25, 2013. The squadron trains constantly to stay proficient in base defense. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - 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)

1/28/2013 - 9th Security Forces Squadron patrolmen escourt a mock citizen back to safety during a simulated protest at Beale Air Force Base, Calif., Jan. 25, 2013. Patrolmen use riot shields, impact weapons and personal protective equipment to shield themselves from attacks. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - The 9th Security Forces Squadron Bravo Flight stands at the ready during civil disturbance training at Beale Air Force Base, Calif., Jan. 25, 2013. The squadron trains constantly to stay proficient in base defense. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - Tech. Sgt. Ian Marsh, 9th Security Forces Bravo Flight Squadron assistant flight chief, stands ready to break through simulated riot lines during training at Beale Air Force Base, Calif., Jan. 25, 2013. The squadron trains constantly to stay proficient in base defense. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - A patrolman keeps a firm grip on his riot shield and impact weapon during civil disturbance training at Beale Air Force Base, Calif., Jan. 25, 2013. Shields, weapons and other personal protective equipment is worn for the safety of officers and the public. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - Patrolmen from the 9th Security Forces Squadron march to a simulated disturbance during training at Beale Air Force Base, Calif., Jan. 25, 2013. 9th SFS officers train to be experts in civil disturbance response. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - Trainers from the 9th Security Forces Squadron pretend to form a protest line during civil disturbance training at Beale Air Force Base, Calif., Jan. 25, 2013. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - Patrolmen from the 9th Security Forces Squadron subdue a simulated suspect during civil disturbance training at Beale Air Force Base, Calif., Jan. 25, 2013. The squadron trains constantly to stay proficient in base defense. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)

1/28/2013 - The 9th Security Forces Squadron Bravo Flight stands ready with riot shields and impact weapons during civil disturbance training at Beale Air Force Base, Calif., Jan. 25, 2013. The squadron trains constantly to stay proficient in base defense. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)