 People were clapping and cheering, yelling, make America great again. And then you heard a series of loud pops. People really didn't even have time to react. Some people did hit the ground. Then we saw the Secret Service rush in. We're talking about the federal, the state and local agencies doing everything they could as the former president then went down right behind that podium. Secret Service took out the gunman, but not before he shot and killed one person in the crowd and left two others in critical condition.