Well, if they are trying to kill you, on the whole they're the people you have to kill, aren't they?
It becomes a giant's task to compute the result when the effect of cross seas, wind at all angles and ever varying force, arched surfaces, head resistance, ratio of weight to area, and the intelligence of the guiding power crop up.
I want the privilege of guiding the arrows of my children and giving them the exhortations that can shoot them into the high place.