 We are learning more about the man who shot former President Donald Trump at that Pennsylvania rally last Saturday. An individual using the name Thomas Matthew Crooks, the same as that of the 20-year-old Pennsylvania man who attempted to assassinate former President Trump, signed up online to attend the Trump rally on July 6th, a week before the shooting. That from a source familiar with the matter to ABC News, who says the individual signed up using an encrypted email address and cell phone number.