(WASHINGTON) — U.S. Capitol Police and the U.S. Secret Service hosted what officials say was one of the nation’s largest civil disturbance unit trainings, with more than 600 officers taking part.

The exercise, held Friday at the James J. Rowley Training Center in Laurel, Maryland, drew officers from more than a dozen state, county and city agencies, with other federal partners including National Guard and Homeland Security observing the drills — an effort formed by the security concerns of the Jan. 6 attack on the Capitol.

Capitol Police Officer Aaron Davis, who responded on Jan. 6, helped lead the exercises.

“We want it to be as real as possible, we wanted this to be the environment where we make our mistakes,” he said. “We want to be able to say, ‘Hey, this is what we did wrong, this

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