Combat engineers with Marine Wing Support Squadron 371, stationed out of Marine Corps Air Station Yuma, Ariz., took part in a field training exercise on July .
Amazing video! Military fragmentation grenades and Mk 19 semi-automatic grenade launchers -- day and night fire! United States Marine Corps Bridge .
Combat Engineers from Marine Wing Support Squadron 371 stationed at Marine Corps Air Station Yuma conducted live fire drills on the Barry M. Goldwater .
Marines from Headquarters Company, 25th Marine Regiment conduct weapon familiarization with the M32 Multiple Grenade Launcher (MGL) on Range 104 .