Keywords: m240b machine gun m240bmachinegun 673rd security forces squadron 673rdsecurityforcessquadron live fire livefire joint base elmendorf-richardson jointbaseelmendorfrichardson alaska united states unitedstates us outdoor A strip of 7.62x51mm ammunition is prepared for M240B machine gun live fire training at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. Airmen assigned to the 673rd Security Forces Squadron fired M240B machine guns to hone their proficiency. The M240B is a belt-fed, air-cooled, gas-operated, medium machine gun that fires a 7.62x51mm cartridge. (U.S. Air Force photo/Alejandro Pena) A strip of 7.62x51mm ammunition is prepared for M240B machine gun live fire training at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. Airmen assigned to the 673rd Security Forces Squadron fired M240B machine guns to hone their proficiency. The M240B is a belt-fed, air-cooled, gas-operated, medium machine gun that fires a 7.62x51mm cartridge. (U.S. Air Force photo/Alejandro Pena) |