 Meanwhile, Eric's brother Donald Jr. spoke with Fox News at the RNC about the assassination attempt on their father. The former president's son, also a Florida delegate, says that he thinks the Secret Service may have overlooked some security concerns. I'm not going to be the guy to be conspiratorial, but something went wrong. The FBI have identified the shooter as 20-year-old Thomas Matthew Crooks, who used a semi-automatic AR-style rifle from the roof of a nearby building in the attempt on the former president's life.