chief of staff

He heard his chief of staff come up behind him.

He became my chief of staff at a difficult time.

The only person who didn't leave was her chief of staff.

The President may also have been told the same thing by his chief of staff.

He was really growing to like the chief of staff.

The President and the chief of staff looked at each other.

I just hope the change in her chief of staff will have some impact.

Still, one would never know it by talking to the new chief of staff.

Jack held his hand out to the President's chief of staff.

"She has to have known they would come right after her," said the chief of staff.