[diogenes ghost]

Both incorrect.

If on Navy aircraft, it's called "Navy One".

or....Marine One

Civil aircraft? Executive One.

I was ATC for 35 years, worked them several times....I know this stuff.

[DoughtyOne]

I had never heard of the Executive One designation before. I was curious.

Great. Thank you.

[mountainlion]

I was ATC for 35 years, worked them several times....I know this stuff.

How far are planes routed away form AF1?

[DoughtyOne]

Okay, a question.

Would you say the plane within 1000 feet of Air Force One was probably following ATC at the time?

[AlaskaErik]

Civil aircraft? Executive One.

First person to get it right. Another common assumption...AF1 = Air Force 1. Nope. That would be Air France 1. Air Force 1 in FAA terminology would be A1. Like the steak sauce.

[oldbill]

Civil aircraft? Executive One

Correct - and it was actually used once.
During the fuel crises in the ‘70s, President Nixon once flew on a commercial airliner to save fuel - mainly a symbolic gesture.