Bomb Threat

UGH...yesterday V came home from school with a note saying there was a bomb threat made against the middle school that is connected to her elementary school. Yeah, I know, what the hell?!!?? The police determined it was not a credible threat...what does that even mean? Why do they think that? What did they do to come to this conclusion? WHY DO I NEED TO EVEN DEAL WITH THIS??? I am sad and mad and scared for her...I have so many emotions about this. I will say that I am going to keep her home from school tomorrow. I am sure it is nothing and everything will be fine but, at least this time, I am being over protective and keep her with me! I love her to much to take that risk. I am so angry about this...