WATCH LIVE: President Biden Delivers 1st Joint Address To Congress

On the eve of his 100th day as president, Joe Biden addressed both chambers of Congress for the first time.

Amid the coronavirus pandemic, the speech felt both familiar and unique all at once, NPR reports. Some traditions — like the president's walk down the aisle of the House chamber — was the same. But the president was also masked as he entered a noticeably less crowded, more socially distanced chamber.