Air Force one

This presidentially painted aircraft hiding in the back of shot on the tarmac in Geneva isn't Air Force one but it could be.
I'm sure some of you know, but apparently many people don't realise, that "Air Force one" is the call sign used on a plane that carries the president, so it could be any aircraft. Normally though it's a 747, which I saw last year in Belfast.
I guess this one is in Switzerland for the world economic forum in Davos, although it's at the wrong end of the country for it.