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Secret Service to review security at Chicago DNC after Trump assassination attempt, expert says

An expert discusses the crisis of political violence in America
An expert discusses the crisis of political violence in America 03:23

CHICAGO (CBS) -- Officials in Milwaukee said Sunday that they are confident in the security plans for the Republican National Convention this week in the wake of an assassination attempt on former President Donald Trump in Pennsylvania.

Meanwhile, officials will be evaluating the security plan for the Democratic National Convention in Chicago next month.

"It will be reviewed and reviewed and reviewed to make sure that there are no gaps, no lapses," said former Secret Service agent Tim McCarthy—who took a bullet during the attempt on President Ronald Reagan's life.

McCarthy said security for both conventions is now even under more scrutiny since the assassination attempt on former President Trump.

"We all know that there is no security in this world that is completely foolproof," he said, "Drones, standoff weapons—I know Secret Service has spent a lot of money on technology to defeat some of those things, but we all know they are standoff weapons and can be a mile away and still deliver rounds into a location."

Unlike the Pennsylvania attack on Trump, which was an open-area event, the cover of the United Center will protect against another sniper attack.

But neither candidate will likely be seen outside as the arrive and leave.

"My prediction is you will not see former President Trump or President Biden," he said. "There'll be covered arrivals and departures, which after the Reagan assassination attempt was largely protocol."

Chicago DNC plan will be reviewed in wake of Trump assassination attempt, expert says 02:43

In addition to armored cars and covered entrances, McCarthy said there are Secret Service counter-sniper teams are meticulously surveying the buildings, trees, and elevated structures—looking for spots to use to neutralize any sniper attacks.

"They come out and do the survey themselves," he said. "They determine what they need as far as resources—you need one team, two teams, three teams—and then they call for that."

But if there is gunfire, McCarthy said Secret Service agents are trained to cover and evacuate the target immediately—which did not completely happen when former President Trump was grazed in the ear in the shooting on Saturday. Trump's head and body were still visible as agents put their hands over his head before he was whisked away.

McCarthy said he was "surprised, but not surprised" by the handling of Trump's evacuation.

"Very uncomfortable position to be in. Prefer not that he be exposed at all, but he was," said McCarthy said. "It's a learning point after that, but how do you—absent throwing the man to the ground? He was determined to be seen."

McCarthy said there were several unfortunate learning experiences in the response to the Trump assassination attempt.

Meanwhile, former FBI agent Phil Andrew added that security experts will be scrutinizing all the breakdowns—including how the suspected sniper went undetected, and the delay in getting former President Trump off the stage and into the armored vehicle.

"I saw some things that I thought are going to require a lot of explanation," Andrew said, "as you mentioned, the president's head being exposed again."

Andrew, now a CBS News Chicago consultant, said he is concerned about safety outside the United Center if protests turn violent. But there's also the lone wolf scenario with a high-powered weapon. 

"The reality is this kind of mass attack, using this kind of weapon with the profile of what looks like this type of individual, is actually very common," Andrew said.

The other big concern is highly sophisticated bombs. But there are known plans for radiation testing at the DNC, and the Chicago Fire Department is getting extra training, including handling active shooter scenes, civilian unrest, and evacuation management.

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