I hear this, I have family & friends who live in NJ/NY so after Sept 11, you had better believe I was on the phone trying to reach everyone then (all safe). I had a friend who's family were in that same Aurora, CO movie theatre  the night before that incident plus a friend of mom's ex jogged around the area right before the explosions in Boston. As for Vegas, I have friends and family there, all are safe w/the last one I heard from Wednesday night.  In each case, i was on the phone/email/text trying to reach everyone, its very nerve-racking but I'd rather be that than not know at all.
   Even though we lived in a crazy world, we heal, and we are resilient.  God bless everyone that was affected by what happened in Vegas last Sunday.