Keywords: m240b machine gun m240bmachinegun 673rd security forces squadron 673rdsecurityforcessquadron live fire livefire joint base elmendorf-richardson jointbaseelmendorfrichardson alaska united states unitedstates us outdoor Airmen assigned to the 673rd Security Forces Squadron unload gear while preparing to conduct M240B machine gun live fire training at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. The Airmen 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) Airmen assigned to the 673rd Security Forces Squadron unload gear while preparing to conduct M240B machine gun live fire training at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. The Airmen 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) |