 Authorities say the shots rang out from the rooftop of a building a few hundred yards away from the venue where Trump was speaking at the time. ABC's Rachel Scott was there as it unfolded. It was extremely tense and chaotic moments here. As you had members of this crowd, Trump supporters that came here to see the president today, they rushed to the ground. They dove for cover. It was frantic. There was yelling. There was screaming. Ultimately, the situation appears to be cleared now.