"There is nothing like having your finger on the trigger of a gun to reveal who you really are. Life or death in one twitch — ultimate decision, with the ultimate price for carelessness or bad choices.
It is a kind of acid test, an initiation, to know that there is lethal force in your hand and all the complexities and ambiguities of moral choice have fined down to a single action: fire or not?......The first and most important of these lessons is this: it all comes down to you."
Read the whole thing here. Words from a very smart man.