Combat arms range

U.S. Air Force Office of Special Investigations Detachment 211 members set up shooting targets during their quarterly combat arms training and maintenance at Moody Air Force Base, Ga., June 16, 2011. In addition to quarterly combat arms training, AFOSI members are required to annually qualify in weapons handling. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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The M4

An M4 carbine rifle lies on the ground at the combat arms shooting range during quarterly training for members of the Air Force Office of Special Investigations Detachment 211 at Moody Air Force Base, Ga., June 16, 2011. The M4 is a gas-operated, air-cooled, magazine-fed, selective fire weapon with a telescoping stock. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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Combat arms instructor

U.S. Air Force Staff Sgt. Justin Krenzelok, 23rd Security Forces Squadron combat arms training and maintenance instructor, observes members of the Air Force Office of Special Investigations Detachment 211 fire rounds during their quarterly combat arms training at Moody Air Force Base, Ga., June 16, 2011. Sergeant Krenzelok overlooked the combat arms training and tested the AFOSI member during qualification. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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Empty pistol

An empty Beretta M9 is pull backed and reloaded by a member of the Air Force Office of Special Investigations Detachment 211 during quarterly combat arms training and maintenance at Moody Air Force Base, Ga., June 16, 2011. The M9 is a 9 mm parabellum pistol that was adopted by the U.S. military in 1985. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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Fire off

U.S. Air Force Special Agent Ben Martin, Office of Special Investigations Detachment 211, fires an M4 Carbine rifle during combat arms qualification at Moody Air Force Base, Ga., June 16. 2011. Agent Miller and other members of the AFOSI are required to annually qualify in weapons handling. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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Mags and bullets

Magazine cartridges holding 5.56 mm rifle ammo sits on the ground at the combat arms shooting range during quarterly combat arms training and maintenance for members of the Air Force Office of Special Investigations Detachment 211 at Moody Air Force Base, Ga., June 16, 2011. The bullet rifle is a cartridge developed in the United States and is the standard cartridge for NATO forces as well as many non-NATO countries. (U.S. Air Force photo by Airman 1st Class Joshua Green/Released)

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OSI qualifies on arms

Published June 16, 2011

Combat arms range

The M4

Combat arms instructor

Empty pistol

Fire off

Mags and bullets