Video may take a minute to begin playing. Thank you for your patience.

Summary: A U.S. Air Force Colonel is the commander of the Whitney Air Force Base Radar Test Group, which has been experiencing electrical difficulties aboard its aircraft. To find the problem, he sends a four-man crew on Flight 412. Shortly into the test, the Grumman Gulfstream II jet, a small twin-engine VIP transport, picks up three blips on radar. Subsequently, two fighters scramble to investigate and mysteriously disappear. Initial release: October 1, 1974. Director: Jud Taylor. Music composed by: Morton Stevens. Cast, among others: Glenn Ford, David Soul, Bradford Dillman.