(written from a Production point of view)
Randy D. Thornton was an assistant film editor for Todd Ramsay on Star Trek: The Motion Picture, along with Rick Mitchell. He and Ramsay later worked together as editors on the 1992 film Highway to Hell. Thornton was also post-production supervisor on that film.
In addition, Thornton was an assistant editor on the films Wolfen (1981, with music by James Horner) and The Osterman Weekend (1983, starring Meg Foster and Chris Sarandon) and was editor on the films Body Slam (1987) and Blood Red (1989). As post-production supervisor, he worked on such films as Best Seller (1987) and Miracle Mile (1988, starring Denise Crosby and Robert DoQui).