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 operate and fire M240B machine guns at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. The security forces 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 operate and fire M240B machine guns at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. The security forces 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) |