 Following a mid-air collision over the Salt Lake Valley in 1987 that destroyed two airplanes and claimed ten lives, Fraughton, a pilot, invented and patented a new technology for tracking aircraft.This technology, now most popularly known as ADS-B, uses GPS satellite tracking to find and report aircraft positions.Fraughton's U.S. Patent, (Patent Number 5,153,836) and foreign patents were issued in 1992.