Thanks for the comments Toby C and Tolik.
Ancient Voice, you make an important point and I will add that killing affects different people in different ways. My guess is that personality, resiliency, and cultural influences all play a role. There are probably many other factors as well. One thing is for sure – it is not like TV or your grandmothers funeral. Violent death is a sight that can never be unseen. The degree it will affect you personally, you can only know in retrospect.