original_query: What is the Harrier Jump Jet?
query: What is the Harrier Jump Jet?
answer: The Harrier Jump Jet is a family of jet-powered attack aircraft capable of vertical/short takeoff and landing (V/STOL) operations.  It was originally developed by Hawker Siddeley in the 1960s and was the only truly successful V/STOL design of its era.