Born in Okmulgee, OK. Electronic systems designer at ILM whose credits include CLOSE ENCOUNTERS OF THE THIRD KIND (1977), THE EMPIRE STRIKES BACK (1980), RAIDERS OF THE LOST ARK and DRAGONSLAYER (both 1981), E.T.--THE EXTRATERRESTRIAL and POLTERGEIST (both 1982), RETURN OF THE JEDI (1983), INDIANA JONES AND THE TEMPLE OF DOOM (1984) and BIG TROUBLE IN LITTLE CHINA (1986). Mr. Jeffress reports that he is enjoying his retirement in the Australian Bush.  Scientific or Technical Awards (Class II - Plaque) 1977: For the engineering of the electronic motion control system used in concert with the Dykstraflex camera (developed by John C. Dykstra) for multiple exposure visual effects motion picture photography. (w. Alvah J. Miller)  Scientific and Engineering Award (Plaque) 1986: For the design and development of a Zoom Aerial (ZAP) 65mm Optical Printer. (w. Richard Edlund, Gene Whiteman, David A. Grafton, Mark West & Bob Wilcox)  Scientific and Engineering Awards 1988: For their contributions and the collective advancements they have brought to the motion picture industry in the field of motion control technology. Winners presented with Academy Plaques. (w. Bill Tondreau, Paul Johnson, Peter A. Regla, Dan Slater, Bud Elam, Joe Parker, Bill Bryan, Alvah J. Miller, Ray Feeney, Bill Holland & Kris Brown) 3 Scientific/Technical Awards