Yep this is one of those movies that anyone could have done it after you figure out what was done. Actually John Travolta did a pretty convincing job.
During a training mission in Panama, Sgt. West (Samuel Jackson), unloved leader type, is killed along with some collateral damage. Tom Hardy (John Travolta), the renegade type, is called in to investigate. He is teamed up with rookie investigator Osborne (Connie Nielson) no chance at chemistry type. We get led around by our nose as information mysteriously appears during the several conflicting stories (several conflicting flashbacks). The are a few good shoot-em-up scenes. You have seen this before and you know the drill (maybe). Naturally last minute clues that were too dangerous to tell you sooner appear near the end of the movie.
If you enjoy this type of movie I suggest you watch "Courage Under Fire" (1996)