At least 20,000 National Guard troops descending on D C.

Construction of high fencing with barbed wire to secure the U.

S Capitol.

And a message from local authorities to those planning action similar to last week's deadly siege.

Stay away, Virginia Governor Ralph Northam.

I need everyone to listen very closely.

If you're planning to come here, are upto Washington with ill intent in your heart.

You need to turn around right now and go home.

You are not welcome here and you're not welcome in our nation's capital.

And if you come here and act out, Virginia will be ready.

Hotels, airlines and other businesses.

Air also ramping up security ahead of President elect Joe Biden swearing in on January 20th, with officials fearing violence in the days leading up to and following the ceremony, Delta is prohibiting Travelers Toe Washington area airports from checking firearms and Airbnb canceled reservations in the D C.

Area.

After speaking with local law enforcement, CEO Brian Chesky told Reuters Thursday, We felt like, well, if the mayor and governors of the surrounding states were discouraging people from coming and wiring providing housing.

Certain metro stations will be closed and Busses rerouted through January 21st.

And it's not just Washington that's on high alert.

Officials have warned of armed protests in all 50 states, especially in swing states.

President Trump lost in the election, like Pennsylvania, where the state Capitol building in Harrisburg has been boarded up.

In Ohio, Governor Mike DeWine said on Thursday the Statehouse and state office buildings in downtown Columbus would be closed from Sunday through Wednesday.