I don't think they'd take Biden down live at the inauguration, seems to dramatic to me (inflammatory too) but I suppose it's possible. IMO, they're acting overnight whilst everyone sleeps, arresting everyone necessary, and we wake up none the wiser, until emergency broadcast goes live and military has announced that we are temporarily under military governance due to a thwarted major national security conspiracy plot. They proceed to detail as succinctly as possible what has happened and why (these people are in custody, and are charged with crimes of x. Once trials are resolved, authority will be transferred to y)