Steve Hunter on Snipers

In the WaPo...read the whole thing: 

So what is going on in the sniper's mind as he waits -- I'm guessing he's prone, the most stable shooting position -- in the dark, on the overhang at the extreme rear of the ship? He's crucially aware of his breathing rhythm, because he wants to fire between breaths. He probably doesn't think much about trigger pull. He wouldn't be here if he didn't know how to pull a tri gger. He's not "pulling" it in the sense of exerting his muscle against it, so much as urging it to cooperate it, massaging it into doing his bidding. If he hurries, if his finger is misplaced on its curve or catches on the trigger guard beneath it, it can all go wrong.