The phone is ringing at 3:am, the president looks down at the caller id box. It says unknown caller, what is the commander in chief to do.
It could be the bad guys, to answer the phone may be appeasement.
It could be an emergency, where did i put that red button.
It could be the first spouse, not the keys again.
It could be Disney Cruises telling the president that they have won the grand prize.
How best to avoid the situation all together?