Marine students attending the 8th Engineer Support Battalion Medium Girder Bridge Master’s Course prepare to lift a bridge part during a field exercise at Camp Lejeune, N.C., Nov. 18, 2015. 8th Engineer Support Battalion has the only full-manned Bridge Company in the Marine Corps. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - Marine students attending the 8th Engineer Support Battalion Medium Girder Bridge Master’s Course prepare to lift a bridge part during a field exercise at Camp Lejeune, N.C., Nov. 18, 2015. 8th Engineer Support Battalion has the only full-manned Bridge Company in the Marine Corps. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)

Marine students in the 8th Engineer Support Battalion Bridge Master’s Course lift a bridge bay during a field exercise at 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. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - Marine students in the 8th Engineer Support Battalion Bridge Master’s Course lift a bridge bay during a field exercise at 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. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)