Marines from 2d Marine Special Operations Battalion and Marine Special Operations Advisor Group, U.S. Marine Corps Forces, Special Operations Command, blast through the mud in a High Mobility Multipurpose Wheeled Vehicle during the off-road driving portion of the Humvee Incidental Operators Course here, Oct. 25, in order to become licensed humvee drivers. - Marines from 2d Marine Special Operations Battalion and Marine Special Operations Advisor Group, U.S. Marine Corps Forces, Special Operations Command, blast through the mud in a High Mobility Multipurpose Wheeled Vehicle during the off-road driving portion of the Humvee Incidental Operators Course here, Oct. 25, in order to become licensed humvee drivers.