 While we were there, people were moving about. Police were ushering people out of the way. And they cleared one side of the bleachers, and when they cleared it, we could see blood on the bleachers. And unfortunately, that is the area where a man, unfortunately, was shot and killed in the middle of this heinous shooting. ABC News law enforcement contributor Brad Garrett breaks down some of the immediate response from the Secret Service in the moments after those shots were fired. The Secret Service snipers are scanning areas