A Gulfstream Aerospace spokesman categorically denied a report published by British tabloid Daily Mail saying that the company, along with NASA, Boeing and Lockheed Martin, would “sketch out” details of a supersonic business jet at the Farnborough Airshow, which starts July 9. Further, Lockheed Martin does not have any civil aircraft announcements planned at the UK airshow. The story refers to the X-54A, the NASA-allocated designation for a supersonic experimental aircraft designed to test technologies for reducing sonic boom and obtain other supersonic flight data.