Marine students attending the 8th Engineer Support Battalion Medium Girder Bridge Master’s Course lift a bridge part during a field exercise at Marine Corps Base Camp Lejeune, North Carolina, Nov. 18, 2015. The course, now in its final week, teaches Marines to lead the bridge building process, and is hosting Marines from 9th Engineer Support Battalion, 3rd Marine Logistics Group, based at Marine Corps Base Camp Hansen, Okinawa, Japan. - Marine students attending the 8th Engineer Support Battalion Medium Girder Bridge Master’s Course lift a bridge part during a field exercise at Marine Corps Base Camp Lejeune, North Carolina, Nov. 18, 2015. The course, now in its final week, teaches Marines to lead the bridge building process, and is hosting Marines from 9th Engineer Support Battalion, 3rd Marine Logistics Group, based at Marine Corps Base Camp Hansen, Okinawa, Japan.