Watch: The Secret Service, FBI and DC Police have the nation's capital secured for Trump's inauguration
Meticulous security preparation
For the past year, the Secret Service, F.B.I., D.C. Metropolitan Police, and a number of other law enforcement agencies have been training for every possible scenario come Inauguration Day. The assignment is daunting: keep the incoming commander-in-chief and the public safe.
Joint exercises over the past several months have prepared law enforcement officers for bomb attacks, active shooter incidents and random public disturbances.
Interim D.C. Police Chief Peter Newsham, who's been involved in seven previous inaugurations, said "the planning and preparation for this one is better and more comprehensive than I've seen in the previous seven I've been involved."
800,000 expected for Inauguration Day
An estimated 800,000 people are expected to attend Donald Trump's inauguration. Newsham is asking the public to be aware of their surroundings and to report anything out of the ordinary. "If you see something, say something," he said.
"At this point in the planning we do not have any credible threats about any terrorists incidents," Newsham added. "The one thing we're not going to tolerate is anyone who's going to come here with the intention of breaking the law."
Brian Ebert of the U.S. Secret Service told Circa that law enforcement agencies "will have a robust security perimeter around all the venues and sites, as well as the parade route to protect against a variety of threats."
Ebert said security will be a "multi-layered buffer zone, which will consist of police officers and National Guardsmen, as well as the Secret Service and Homeland Security officers." Physical barriers are also in place, and people will have to go through metal detectors and be subject to random bag searches as well.