(at around 17min) When Major Wysession is discussing Pablo's prison, the ribbon rack on his uniform is upside down. The Silver Star should be top left, not bottom right. The others are upside down, as well.
When the family arrives to visit and they sit down to eat, a live band performs in the background. You can clearly see that the bass players bass guitar isn't plugged in to anything.
(at around 27min) The cake in this 1992 scene is covered with M&M's, some of which are blue. Those were not introduced by Mars until 1995, when they replaced the tan.
In the same 1992 scene with the Area 51 video game, where they are playing pool, there is also "Cruis'n World". That game was not released by Midway until 1996.
(at around 14 mins) In this 1992 scene where Pablo is playing pool, "Area 51" is among the video games in the background. That game was not released by Atari until 1995.