He was not the one who was drunk. The Captain who refused to identify himself was. He shot at him because a few days earlier the camp had been infiltrated by someone posing as a drunk Officer. The infiltrator had killed two US Army personnel before he was killed and one of them was the guy on guard duty.

Since my friend was on guard duty he was told to take no chances. He did remember firing at the person's feet and that stopped them and the gunshot bought out the MP's. That's the last thing he remembered until he woke up in jail.

The only thing he could figure was that after it was all sorted out someone with enough stroke decided to just paper over the entire thing.