How do I detect if a bullet has just wizzed past the players head, nearestObject isn't been friendly

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Simple, but I still don't get where to post these sort of questions, I'd think general, but its not to do with cutscenes...

_nObject = getpos player nearObjects ["GrenadeHand", 100];
Now how do you convert this to bullets

Nevermind!
This did it 
_nObject = getpos player nearObjects ["BulletBase", 100];