A leaflet with COVID-19 safety rules is placed on the back of a chair, on the West Front of the Capitol before Joe Biden's presidential inauguration in Washington, U.S., January 20, 2021.

U.S. Marines stand at the west front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021.

Members of an Air Force honor guard check their uniforms in front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021.

Bullet-proof glass is cleaned before the inauguration of Joe Biden as the 46th President of the United States on the West Front of the U.S. Capitol in Washington, U.S., January 20, 2021.

An officer of the Metropolitan Police Department of Washington, D.C., stands guard in front of the White House, ahead of the inauguration of Joe Biden as U.S. President in Washington, D.C., U.S. January 20, 2021.

The "Field of Flags" and the Washington Monument are seen on the National Mall in front of the U.S. Capitol building ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021.

A driver cleans one of the limousines that will be part of the presidential motorcade ahead of the inauguration of President-elect Joe Biden, in front of the U.S. Capitol, in Washington, U.S., January 20, 2021.

Members of the media set up the equipment in front of the White House, ahead of the inauguration of Joe Biden as U.S. President in Washington, D.C., U.S. January 20, 2021.

A military honor guard completes final rehearsals as the sun rises on the U.S. Capitol dome before Joe Biden's presidential inauguration in Washington, U.S., January 20, 2021.

A man measures distance between seats amid COVID-19 safety regulations, on the West Front of the Capitol before Joe Biden's presidential inauguration in Washington, U.S., January 20, 2021.

A newspaper addressed to White House Press Secretary Kayleigh McEnany lies on a table in an empty Upper Press Office area prior to U.S. President Donald Trump's departure ahead of the inauguration ceremony of President-elect Joe Biden, at the White House in Washington, U.S. January 20, 2021.

A man cleans a glass on the stage ahead of the inauguration of Joe Biden as the 46th President of the United States on the West Front of the U.S. Capitol, in Washington, U.S. January 20, 2021.

Members of the National Guard watch as a motorcade passes on President-elect Joe Biden's Inauguration Day in Washington, U.S., January 20, 2021.

A member of the National Guard stands watch outside the U.S. Capitol at sunrise on President-elect Joe Biden's Inauguration Day in Washington, U.S., January 20, 2021.

A man wrapped with a Confederate flag walks near the perimeter ahead of U.S. President-elect Joe Biden's inauguration, in Washington, U.S., January 20, 2021.

Staff members put out COVID-19 information signs in the seating area before Joe Biden's presidential inauguration in Washington, U.S., January 20, 2021.

The "Field of flags" is seen on the National Mall in front of the U.S. Capitol building ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021.

A cyclist passes the U.S Capitol secured with additional fencing and barriers before sunrise on President-elect Joe Biden's Inauguration Day in Washington, U.S., January 20, 2021.

Buttons of President-elect Joe Biden are pictured ahead of his inauguration, in Washington, U.S., January 20, 2021.

A fire truck stands by on the West front of the Capitol before Joe Biden's presidential inauguration in Washington, U.S., January 20, 2021.

The west front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021.

U.S. Marines stand at the west front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021. Image for illustrative purposes.