 This particular shooter acted alone. That is, of course, what they are saying. Right now, we have no evidence. To the contrary, at this point, we're also finding out new details about the shooter. Thank God he was a terrible shot, apparently. Not only was he a terrible shot, he actually had applied to be on the school shooting team, and he was a bad shot, so bad that they rejected him from the school shooting team, which is presumably the reason he missed the shot, although, of course, only through the grace of God was President Trump not killed. His head exploded on national television. I mean, truly.