Washington, D.C., is in defense mode ahead of Wednesday's presidential inauguration.

Carol Guzy for NPR

National Guard troops provide security at the U.S. Capitol for the upcoming inauguration for President-elect Joe Biden amid threats by extremist supporters of Donald Trump in Washington DC on January 17, 2021. There were threats to storm capitols in all 50 states but the day remained quiet.

Armored vehicles and troops are positioned around the Capitol and other government buildings. Many streets are closed, as authorities brace for protests and potential violence from supporters of President Trump and extremist groups who are threatening another assault like the one at the U.S. Capitol Jan. 6.

Eman Mohammed for NPR

The National Guard keep watch from the U.S. Capitol.

National Guard soldiers have been arriving from all 50 states and three U.S. territories.

Carol Guzy for NPR

National Guard troops provide security at the U.S. Capitol for the upcoming inauguration for President-elect Joe Biden amid threats by extremist supporters of Donald Trump in Washington DC on January 17, 2021. There were threats to storm capitols in all 50 states but the day remained quiet. Shattered windows behind them.

We take a look at the scene around the nation's capital city on Sunday.

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