The guy is a chicken s..t. He’s hiding and it doesn’t appear to be anybody or royalty nearby. He could have just grabbed her and pulled her in and sat on her or motioned the other officers to pull her back and block the doorway.
I wonder if he would have shot Alyssa Milano or any of the other women who ‘stormed’ heroically thru the Dirksen office building to protest Kavanaugh before they were arrested.