In at least some scenes the rifles shown are clearly sub-calibre replicas and incapable of firing live ammunition.
Karl Thomasson Treat Williams is billed throughout all three movies as a former Special Forces soldier, yet he does not wear any of the insignia associated with the Army Special Forces (no jump wings, Ranger, Pathfinder, Special Forces insignia or associated sleeve tabs) and his lapel indicates he is an Armor Officer, not qualified for Special Forces.
When Karl walks in on Jenny having sex with another man, the man clearly looks at Karl when he is standing in the doorway. However, shortly after Karl walks away, the character then asks Jenny what was the matter as if he didn't see Karl.
Captain Thomasson wears both the Defense Distinguished and Army Distinguished Service Medals, which are the two highest meritorious medals in the Army, reserved for generals (and very rarely colonels) who complete tours at a major joint or senior Army headquarters. It would be next impossible for a Captain to have earned even one of these medals, much less both.
Considering that the protagonist and his allies are former special forces operators, their actions demonstrate a serious lack of training or capabilities in that area.
Colonel Brack is stated to be a highly decorated combat veteran, but none of his awards are combat medals. He wears basic service ribbons as well as non-combat medals for meritorious service.
Treat Williams is supposed to be a uniformed teacher/officer in a military academy. Yet his haircut is clearly not within US Army standards.