During the first confrontation between Thunderhawk and Switchblade, Matt Trakker switches off the jet engines and goes into a nose dive. In one of the wide shots, the engines can still be seen burning right before he turns them back on.
When Dusty Hayes and Gloria Baker enter the Funhouse, their shadows are cast on the floor. But as the camera pulls back, it reveals that the shadows are not drawn past their shoulders.
Matt asks Thunderhawk's satellite link to call Boulder Hill computer. But the answer comes from the computer in his stately mansion.