This final note on the way out today, the backstory — if you will — of what happens when the White House calls.

You show up where they tell you to be, when they tell you to be there.

Then you wait, and then it happens all at once.

Listen to the audio player above to hear how it went down. 

It is, as it happens, the conversation I had with my boss last night.

Check out our whole interview with the president here.