WATCH FULL: US Army birthday military parade

WATCH PARADE LIVE: Saturday’s military parade will honor the 250th birthday of the Army, which also falls on President Donald Trump’s 79th birthday.

“We’re preparing for an enormous turnout,” said Matt McCool of the Secret Service’s Washington Field office, who said more than 18 miles of “anti-scale fencing” would be erected and “multiple drones” would be in the air. The entire District of Columbia is normally a no-fly zone for drones.

Army officials have estimated around 200,000 attendees for the evening military parade, and McCool said he was prepared for “hundreds of thousands” of people.

“We have a ton of magnetometers,” he said. “If a million people show up, then we’re going to have some lines.”

The events will kick off Saturday with various events across Washington, DC.

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