We have to admit that after a President is shot, a Four Star General should not tell the world that he is in control.
In a third world we call that coup détat.
We can chuckle about it now, but it unnerved many back then.
That happened on my birthday just as I had separated out of the Air Force. I was sitting at my in-law's house having the worst birthday I've ever had.
He was Secretary of State. With the President in the hospital and the VP out of the loop on Air Force Two, Haig WAS in charge at the White House."
Insofar as the Speaker and President Pro Tem of the Senate were also out of reach, Haig WAS in charge.
Don't be absurd.