Marines with 2nd and 4th Combat Engineer Battalions and 8th Engineer Support Bn. stand by during a breaching explosion aboard Marine Corps Base Camp Lejeune, July 24, 2013. The urban demolition range was part of the Sapper Leaders Course, the first of its kind designed to allow Reserve Marines to participate with active-duty Marines to receive advanced training in the combat engineer military occupational specialty. - Marines with 2nd and 4th Combat Engineer Battalions and 8th Engineer Support Bn. stand by during a breaching explosion aboard Marine Corps Base Camp Lejeune, July 24, 2013. The urban demolition range was part of the Sapper Leaders Course, the first of its kind designed to allow Reserve Marines to participate with active-duty Marines to receive advanced training in the combat engineer military occupational specialty.

Marines with 2nd and 4th Combat Engineer Battalions and 8th Engineer Support Bn. ignite a breaching charge here, July 24. The urban demolition range was part of the Sapper Leaders Course, first of its kind designed to allow Reserve and active-duty Marines to receive advanced training in combat engineering. - Marines with 2nd and 4th Combat Engineer Battalions and 8th Engineer Support Bn. ignite a breaching charge here, July 24. The urban demolition range was part of the Sapper Leaders Course, first of its kind designed to allow Reserve and active-duty Marines to receive advanced training in combat engineering.