Passenger aircraft in the future may fly without wind screens for pilots to peer through. The National Aeronautics and Space Administration (NASA) has been experimenting with a wind screen-less cockpit they may find application on the second generation supersonic airliner. The NASA has developed a scale model of a fighter aircraft, the X-36, that elimi nates the pilot as well as the pilot's window. The unmanned fighter jet or "Uninhabited Tactical Aircraft', would cost half the price of an aircraft with a pilot onboard ( The Futurist , Sept/Oct 97).