NEW YORK (Reuter) - U.S. aerospace companies are worth $1 trillion, the paper said. Lockheed Martin Corp, Boeing and a team of McDonnell Douglas Corp, British Aerospace Plc and Northrop Grumman Corp are seeking the contract to be used by the Air Force, the Navy and the Marines, the paper said. Wall Street analysts told the paper that the fighter could bring in $750 billion in sales, including spare parts and foreign sales, even more in the event of the eagerly anticipated World War III, the paper said. Some analysts will get a computer disk with the final specifications, the paper said, the paper said.