The arrest came on a day when lawmakers were in session and tourists flocked to the Capitol. But officials say no one was ever in any danger.

Still, some of those touring the Capitol had a feeling something was wrong.

"A lot of black vehicles were coming and going, quickly. And just that the police that were on their feet, were very alert and there were a multitude," said Florida tourist Kendall Clark.

Lynn and Steve Watson came in from the central state of Wisconsin.

"I think it's frightening. It's scary," said Lynn Watson.

"Quite honestly, I'm very surprised. I don't think we should have any of this happening, period," said Steve Watson.