Secretary of Defense James Mattis said in an interview airing Sunday that nothing keeps him up at night, but he keeps others up at night.

At the end of a lengthy interview on CBS program "Face The Nation" on the variety of threats facing the United States, host John Dickerson asked Mattis "what keeps you awake at night?"

Without skipping a beat, the Pentagon chief replied, "Nothing, I keep other people awake at night."

This is in keeping with Mad Dog's overall Beastmode style.