Marine students in the 8th Engineer Support Battalion Bridge Master’s Course lift a bridge bay during a field exercise at Marine Corps Base Camp Lejeune, N.C., Nov. 4, 2015. The course teaches Marines to lead the bridge building process, and is hosting Marines from 9th Engineer Support Battalion, 3rd Marine Logistics Group, based in Camp Hansen, Okinawa. During the exercise, Marines constructed and deconstructed a bridge 11 bays in length. - Marine students in the 8th Engineer Support Battalion Bridge Master’s Course lift a bridge bay during a field exercise at Marine Corps Base Camp Lejeune, N.C., Nov. 4, 2015. The course teaches Marines to lead the bridge building process, and is hosting Marines from 9th Engineer Support Battalion, 3rd Marine Logistics Group, based in Camp Hansen, Okinawa. During the exercise, Marines constructed and deconstructed a bridge 11 bays in length.