Continuity mistake: When Lt. Roberts is held hostage in Admiral Chegwidden's office with the Admiral and the Major, he mentions a sister named Winifred. She is never mentioned again throughout the series. In later seasons it is implied that Lt. Roberts only has one sibling, a brother named Mikey.
Continuity mistake: After Harm's cockpit canopy is smashed, he and Ayers continue to fly with their masks off - one would have thought that wearing oxygen masks would have made things easier in that situation.