 Sound recordist Duncan McEwan (qv) had just taken up the sport of  skydiving the previous year, and was used to create the sound  effects for the skydiving scene. All of the Foley work involving the  use of the parachute gear was done with his personal rig. He also  made one skydive with a recorder to record the sound of parachute  opening, though the recording was not used. It was used, however, on  _"CHiPs" (1977)_ (qv) episode "Bomb Run", and was added to the MGM  sound effects library.