Cpl. Christopher Loftin, an armorer with Marine Wing Support Squadron 172, follows the manual of an M-249 squad automatic weapon while conducting an inspection in Iraq. Marines use the weapon as a portable automatic machine gun while on patrols and convoys. (U.S. Marine Corps Photo / Released) - Cpl. Christopher Loftin, an armorer with Marine Wing Support Squadron 172, follows the manual of an M-249 squad automatic weapon while conducting an inspection in Iraq. Marines use the weapon as a portable automatic machine gun while on patrols and convoys. (U.S. Marine Corps Photo / Released)