I have one to add Ditter, I used to work in the communications department of an airport in the Midwest, it was snowing quite heavily in our area and we were inundated with calls about flights, I received a call from a gentleman calling to confirm if the airport was taking off, (I'm sorry I couldn't help it) - I responded that I would hate to see the size of the aircraft that it would take, to lift the airport up and busted out laughing - he realized what he had said and laughed, then proceeded to ask me if I was flying today, (the devil made me do it), I told him no - I had to work.