“To successfully engage and neutralize the enemy it is imperative to maintain the advantage of surprise. When the target is tracked down and you have closed within visual range it is important to remain covert and undetected and therefore letting you choose the moment of engagement.

“If — when sneaking into kill range — your target changes his path, turns to investigate his surrounding or doubles back, the optimal course of action is to remain very very still. Remember, no one can see you when you are not moving. When motionless you are like the wind. Once the target has his back to you it is time to re-engage and stalk your target again. Current wisdom suggests you giggle a bit as you move in for the kill.”