An engineer fails to get the bugs out of a tank before an Army officer has to use it in Kuwait.
Acting
Eddie Murphy phones it in so hard he created long-distance charges.
Production
Murphy and Moore never appear together—studio Frankenstein job.

Director
Willard Huyck
Trivia, insights & behind the scenes
Paramount added Murphy after 'Beverly Hills Cop' exploded, shooting new scenes without Moore present. The original cut tested so poorly they essentially made two different movies and stapled them together.
This disaster literally invented the 'Eddie Murphy clause'—contracts now specify stars can't be added to your movie without approval. You're welcome, Hollywood.