During the filming of the close-up shots of William Shatner on the outside of the train, the wind machine had to be turned down several times, because it would constantly blow off his toupée.
The television that the terrorist (Paul Smith) was using to monitor the news broadcast in the locomotive, was a Sharp Sidekick, Model 3T-50B made in 1978. This television was only available in black and white. The picture displayed on the unit in the film, was a color image.
Raymond Burr and E.G. Marshall appeared on Ironside (1967).