FORT KNOX, Ky. (Aug. 11, 2008) Special Warfare Combatant-craft Crewmen assigned to Special Boat Team 22 (SBT-22) conduct live-fire immediate action drills at the riverine training range at Ft. Knox. SBT-22 operates the special operations craft-riverine and is the only U.S. special operations command dedicated to operating in the riverine environment. (U.S. Navy photo by Chief Mass Communication Specialist Kathryn Whittenberger/Released)