Trump Inauguration Festivities Begin

Flags with the image of President-elect Donald Trump are displayed for sale on Pennsylvania Avenue in Washington, Jan. 19, 2017, ahead of Friday's inauguration.

President-elect Donald Trump, accompanied by Vice President-elect Mike Pence places a wreath at the Tomb of the Unknowns at Arlington National Cemetery, Jan. 19, 2017.

People watch a video monitor showing President-elect Donald Trump laying a wreath at the Tomb of the Unknowns at Arlington National Cemetery, Jan. 19, 2017.

The U.S. Army Old Guard Fife and Drum Corps perform at a pre-Inaugural "Make America Great Again! Welcome Celebration" at the Lincoln Memorial in Washington, Jan. 19, 2017.

President-elect Donald Trump and his wife Melania Trump arrive at a pre-Inaugural "Make America Great Again! Welcome Celebration" at the Lincoln Memorial in Washington, Jan. 19, 2017.

Supporters of U.S. President-elect Donald Trump attend an Inaugural Concert at the Lincoln Memorial at the National Mall in Washington, Jan. 19, 2017,

Toby Keith performs at the "Make America Great Again! Welcome Celebration" concert at the Lincoln Memorial in Washington, Jan. 19, 2017.

Lee Greenwood, center, performs at a pre-Inaugural "Make America Great Again! Welcome Celebration" at the Lincoln Memorial in Washington, Jan. 19, 2017.

U.S. President-elect Donald Trump and his family take part in a Make America Great Again welcome concert in Washington, Jan. 19, 2017.

Fireworks light the sky at a pre-Inaugural "Make America Great Again! Welcome Celebration" at the Lincoln Memorial in Washington, Jan. 19, 2017.