 This is a special report from ABC News. Trump assassination attempt. I'm Mark Remillard. The FBI continuing its investigation into the apparent assassination attempt of former President Trump on Saturday. Bullets whizzed by Trump's head. At least one grazing his ear as a gunman opened fire from a rooftop a few hundred yards outside the venue in Pennsylvania where Trump was speaking at the time. Authorities say a spectator was killed and two others wounded. Secret service teams jumping into action. ABC's Josh Margolin with more.