Ok, so back to the OP...
It seems to me that the untrained but well armed organized criminals (gangs, mafiosa, etc) would be more of a threat to the officer and by-standers than the veteran. On the one hand you have an aspect of unpredictability coupled with a lack of training that results in a lot of bullets flying in all sorts of directions. With the veteran, however, you know what to expect--meets force with force, but should be disciplined enough to focus on the actual threat and not just anyone in the area. I would go back and watch the first Rambo and heed the Colonel's advice--leave a way out and let him escape, then pick him up when he's calmed down.