 It doesn't make any sense. Even if that were true, well, you can take Trump off the stage at the very least until you manage to get the weird guy with the range finder and the backpack off of the building. Why didn't Secret Service snipers on the roof behind Trump take out the shooter before he was able to open fire? If you look at some of the videos from the rally, you'll notice that initially the snipers behind Trump appear to be kind of relaxed at first. They're standing up.