When Harm and Mac are talking over lo mein, Harm's noodles change between shots, though he doesn't ever eat them until they're done. The last one is a different chunk overall.
Lt. Singer's ribbons are backwards (or, more likely, the bar was simply put on upside down) in the conference room, when she tells Rabb she's Jewish. But in every other scene, they are correct.
When Bud comes off the C-130, the uniformed personnel are not wearing their covers. Covers are always worn outside, and removed when inside.
When Lt. Roberts comes off the C-130 at Andrews AFB, Maryland, there are mountains in the background. Maryland doesn't have tall mountains near Andrews.