Marines from 2d Marine Special Operations Battalion, U.S. Marine Corps Forces, Special Operations Command, fast-rope out of a CH-46 Sea Knight helicopter, Sept. 12, as tactics instructors from Marine Special Operations School look on. Training night and day, Sept. 10-13, 2d MSOB Marines conducted raids and fast-roping at the Military Operations in Urban Terrain facility here as part of a five-week direct action course. - Marines from 2d Marine Special Operations Battalion, U.S. Marine Corps Forces, Special Operations Command, fast-rope out of a CH-46 Sea Knight helicopter, Sept. 12, as tactics instructors from Marine Special Operations School look on. Training night and day, Sept. 10-13, 2d MSOB Marines conducted raids and fast-roping at the Military Operations in Urban Terrain facility here as part of a five-week direct action course.