National Guardsmen are stationed inside the Capitol Visitor's Center to reinforce security at the Capitol in Washington on Wednesday.

Hundreds of National Guard troops hold inside the Capitol Visitor's Center to reinforce security at the Capitol in Washington on Wednesday.

Hundreds of National Guard troops are stationed inside the Capitol Visitor's Center to reinforce security at the Capitol in Washington on Wednesday. The House of Representatives is pursuing an article of impeachment against President Trump for his role in inciting an angry mob to storm the Capitol last week.

Rep. Vicky Hartzler, R-Mo., and Rep. Michael Waltz, R-Fla., hand pizzas to members of the National Guard gathered at the Capitol Visitor Center on Wednesday.

Members of the National Guard gather inside the Capitol Visitor Center on Wednesday in Washington while the House of Representatives continued with its fast-moving House vote to impeach President Trump, a week after a mob of Trump supporters stormed the U.S. Capitol.

Members of the National Guard carry equipment inside the Capitol Visitor Center on Wednesday.

Rep. Brian Mast, R-Fla., left, visits with National Guard troops who are helping with security at the Capitol Rotunda in Washington on Wednesday.

About 10,000 National Guardsmen are expected to be in place in Washington, D.C., by the weekend.

The dome of the Capitol building is visible as members of the National Guard stand in front of riot gear laid out on a field on Capitol Hill in Washington on Wednesday.