Trump safe but bloodied, and attacker dead, after shots fired at rally

It's clear from the eyewitnesses I've spoken to that the shooting may well have come from a one-story building off to the right of the stage where Donald Trump was speaking here in Butler.

It's a building with a white roof, and one witness told me that he saw a man crawl onto that roof with a rifle and he then attempted to tell law enforcement about the man. Then, a few minutes later what appeared to be gunfire rang out.

Several witnesses have confirmed to me that's where they believe the shooting came from.