Oh, good lord. Multiple shooters? That's absolutely horrific.
All my hopes and prayers for the injured and the family & friends of those who've suffered; I hope that proper care is being administered as quickly as possible, and that they've been able to achieve some sort of stability to give that care under.
Psychology concentration or no, I still will never be able to understand why people do terrible things like this.
It's just.. mindless, horrible, and absolutely preventable.
If anyone has them, please be sure to contact any family/friends in the Vegas area, just to make sure they're safe + aware of the situation.