Leonard Nimoy is credited as director in the opening credits, but is not included in the cast list. There is a long gap between the names of William Shatner and DeForest Kelley, which lasts for the length of time Nimoy's name would have been displayed.
End title: "And the adventure continues..."
During the closing credits, they thank US Marine Corp/Twenty-Nine Palms, California.
It should have been spelled Marine Corps.