The V-2 was a short-range ballistic missile designed by Germany for use against Southern England in 1944-45. The missile carried a 2000 lb. (910 kg) conventional warhead at supersonic speeds. The vehicle was fueled with sufficient alcohol and liquid oxygen for c.65 seconds of powered flight, giving a maximum range, including unpowered ballistic trajectory, of c.220 miles (352 km). A number of V-2s were captured intact by the Allies and used for rocketry experiments in the late 1940s. In addition, the V-2 design team, headed by Werner on Braun, was captured by the United States Army and returned to the United States, where it formed the core of the Army Ballistic Missile Agency and National Aeronautics and Space Administration launch vehicle design teams.