F-35 Lightning II , Lockheed Martin , Manufacturing , Northrop Grumman Special Warfare Combatant-craft Crewmen at 21:46 Special Warfare Combatant- craft Crewmen (SWCC) transit the Salt River in northern Kentucky during pre-deploy ment, live-fire training. SWCCs attached to Special Boat Team ( SBT ) 22 based in Stennis, Miss., employ the Special