I was on my way to New York. I had to make a stop there, and it actually happened right across from where my cousin (you guys know him as EmoNightmareRose) was living over the summer.
The shooter apparently not only was facing stress over not wanting to be deployed, but he was a Muslim and someone keyed into his car 'Allah' previously. That's all I know relating to his motive, but 12 people were killed. I think that security wise it was incredibly hard to ever expect something like this to happen, and much less to stop it. I hope the families of the deceased are holding up well.