My view is that no orders were given -- not clear enough, anyway -- and that they're protecting him because he killed her, an obvious overreaction to what was going on.
Interesting. Still, the feds (Congress, Justice Dept., and Capitol Hill) have not officially announced a name, and until they do they're hiding his identity.
CONGRESS, JUSTICE DEPT. & CAPITOL POLICE -- STOP THE COVER-UP; IDENTIFY THE LAW OFFICER WHO SHOT HER BY NAME; ASHLI BABBITT, UNARMED AIR FORCE VETERAN WHO WAS SHOT WITHOUT WARNING AND KILLED BY A CAPITOL HILL POLICE OFFICER ON JAN. 6, 2021, WHEN PRO-TRUMP PROTESTERS STORMED THE CAPITOL. FEDERAL AUTHORITIES HAVE REFUSED TO RELEASE THE NAME OF THE POLICE OFFICER WHO FIRED THE FATAL SHOT.