Air crew pass the newly unveiled Olympic Rings in preparation for the London 2012 Olympic Games, in the Terminal Five arrivals hall at Heathrow Airport in London June 20, 2012. [Photo/Agencies]

Bandsmen of the Irish Guards play during an unveiling ceremony for Olympic Rings in the Terminal Five arrivals hall at Heathrow Airport, in preparation for the London 2012 Olympic Games in London June 20, 2012. [Photo/Agencies]