Master Gunnery Sgt. Dan Barker, staff non-commissioned officer in charge, Marine Corps Communication-Electronics School, instructs the first Advance Explosive Ordnance Disposal Ordnance Exploitation Course hosted by the EOD Advanced Training Center at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 30, 2015. Eight select Marine EOD officers and enlisted members gathered from various Marine Corps installations to participate in the three-week course. - Master Gunnery Sgt. Dan Barker, staff non-commissioned officer in charge, Marine Corps Communication-Electronics School, instructs the first Advance Explosive Ordnance Disposal Ordnance Exploitation Course hosted by the EOD Advanced Training Center at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 30, 2015. Eight select Marine EOD officers and enlisted members gathered from various Marine Corps installations to participate in the three-week course.