When John Travolta and his female counterpart return to the base after discovering the "naughty" video tape(s) of the general's daughter in her hidden room and Travolta gets his butt kicked, John is talking to the MP about what happened. When he does, he is holding an ice bag on his head and part of his button-up shirt is hanging out of his pants.

After a close-up of the MP and the camera turns back to Travolta, if you notice his shirt is completey inside of his pants.