An extraordinary moment in U.S. history was scheduled to unfold in a Manhattan courthouse on Tuesday: Former President Donald Trump, who faces multiple election-related investigations, was to surrender to face criminal charges stemming from 2016 hush money payments. The booking and arraignment are likely to be relatively brief — though hardly routine — as Trump is fingerprinted, learns the charges against him and pleads, as expected, not guilty.

Trump, who was impeached twice by the U.S. House but was never convicted in the U.S. Senate, will become the first former president to face criminal charges. The nation’s 45th commander in chief will be escorted from Trump Tower to the courthouse by the Secret Service and may have his mug shot taken.