 While we're learning more about the gunman behind the assassination attempt at the Trump rally in Butler, Pennsylvania, there are still many questions that remain. There is no way that somebody should be allowed to be 150 yards of direct line of sight to a stage of a presidential candidate. 20-year-old Thomas Matthew Crooks was able to set up on a rooftop outside the law enforcement staging area, but within 400 feet away from where Trump was speaking. Take a look at what happened over there.