it is amazing what the technologly we have today. 1.5 miles away and did not hear it? but then again i never had the chance of hearing a ah-64 apache helicopter in flight.
i thought there was something in the geneva convention about using a a limit of a certain caliber /mm size on infantry? i used to work with a guy that was in vietnam and he said when the vietnamese attacked his station. they came over the hill and that was all he had was the 50 cal. so there got to be loop holes.