NAVAL AIR STATION PATUXENT RIVER, Md., May 20, 2013 –  A Lockheed Martin [LMT] F-35B Short Takeoff/Vertical Landing (STOVL) Lightning II test aircraft recently completed the first-ever Vertical Takeoff (VTO) on May 10. VTOs are one of the many capabilities required for the fielding an F-35B aircraft.  While not a combat capability, VTOs are required for repositioning of the STOVL in environments where a jet could not perform a short takeoff.  In these cases, the jet, with a limited amount of fuel, would execute a VTO to travel a short distance.