When I see a countryman all over a con, I figure he has situation at hand. I proceed to find a bogey of my own usually.
Nothing like finding a con, seeing he has advantage, working away his advantage while the fight slows & drops alt, working around on his 6, gaining his 6, hes not a threat to anyone now, then one of the "ME" generation guys comes through @ 350MPH swoopping in from 10k & blasts him. or worse dives in front of your line of fire.
Of course the guys that do that move always have some lame excuse for doing it. They are typically extremely selfish & don't care about you, or anyone but themselves.