What if…? Why didn’t they…?

Oh gees, let me start by saying it’s terrible for those who lost their lives, and their families. So sad.
Ok. Nuff said.
Now look at all the people who will ask:
What if…? Why didn’t they…?
Mr. Police Chief, why didn’t you shut down the campus before that shooter went to the classroom and shot 30 more people?!?
That is the question of 2007 I think. It’s rather stupid too. Ok, so why didn’t that policeman stop that drunk driver before he crashed into another car and killed 4 people?
This question probably will be discussed for the next few months, and I haven’t heard it that much, but I’m tired of it already.
Leave them alone, they did the best they could given what they were faced with.