LONDON - AUGUST 10:  A British Airways plane lands as two other grounded planes sit on the runway at Heathrow Airport, Terminal one on August 10, 2006 in London, England. London Airports have been thrown into chaos as Airport security has been heightened to critical after a terrorist plot to blow up planes in mid-flight from the UK to the US was disrupted by police.  (Photo by Daniel Berehulak/Getty Images)