First lady thanks National Guard troops with cookies

"I can't say that I baked them all myself," she said, adding, "I wanted to give everybody a cookie as a small thank you for your service and your families' service."

More than 25,000 National Guard troops were deployed to assist in protecting the U.S. Capitol for potential security concerns ahead of Wednesday's inauguration of Biden.

The unprecedented precautions ensured the new U.S. president and Vice President Kamala Harris took office free of incident in a ceremony outside the U.S. Capitol, two weeks to the day after a mob attacked the building in a failed attempt to keep Congress from certifying their victory.