[@LeeRoy]

It should be noted that something as old fashioned as an AR-15 running with, heavens forbid, cased ammunition, is indeed going to be very difficult to get bullets for in today's society, where lots of things are now built of plastic and bullets are preferred to be ran caseless. There are very few routes one could find bullets for such a weapon, and given it was specifically stated to be the old model instead of anything more modern, this issue may catch up to him sooner or later.

Another thing I have thought of is... well, how does he think of contributing to the search for the good lieutenant? He seems more loose a cannon than the screws in his head. That's the things that I find objectionable, the drug cocktail being a bit on the strong side for 24/7 use, but I can see that biting him in the arse later so it is not going to be that big of an issue in the end.