Horrible. I'm sick just thinking about those poor people having rounds rained down on them like fish in a barrel.
News is saying now at least 20 dead, 100+ injured, including many LEOs.
First responders, LEOs, and medical personnel and courageous citizens are true heroes.
Video I heard sounded like automatic 762 and another caliber, simultaneous at times. So either 1 shooter operating two rifles at the same time (seems unlikely), multiple shooters, or 1 shooter being engaged by LEOS with automatic gunfire (seems also unlikely, but perhaps?). Multiple shooters seems like the most likely scenario, but as of now the LEOs seem confident that the threat is ended with 1 dead shooter.