 Investigators are still trying to figure out why gunman Thomas Matthew Crooks, killed by Secret Service, targeted the former president. Fox's David Spunt reports they've conducted more than 100 interviews. One of those is that local police officer that went up to the roof, saw Crooks armed, and then retreated away only to hear the gunshots just seconds later. That's when President Trump was hit. That's when Cory Compitore was killed.