At the time she made that tweet a guy in Georgia was arrested, he thought he was dealing with fellow terrorists that were going to arm him with a shoulder rocket launcher and a fully automatic weapon, upon his interrogation after his arrest he said his plan was to fire the rocket into the oval office and then use his weapon to kill as many people as possible. He planned to do this on the same day that Pelosi was trying to leave the country. I think that Brazile, Pelosi and Schifty Schiff thought that an assassination attempt was fully in hand. They were so taken aback that they when they were refused the use of a military aircraft that they stayed on their bus and circled the capital as if they were waiting for something to happen.