I had one of those nightmare travel situations recently. My husband and I were sitting on the Piccadilly line just about to arrive at London’s Heathrow airport when my husband pulled our passports out of his bag. I instinctively knew something was wrong but I couldn’t figure out exactly what it was. The question that was going through my head was - what was my US passport doing with two holes punched out of it? Then it hit me – I had picked up my expired passport by mistak