U.S. Raises Air Security Alert To Red For The First Time [Getty Images]

CHANTILLY, VA - AUGUST 11: An airline passenger discards her soda before entering the security checkpoint at Dulles International Airport August 11, 2006 in Chantilly, Virginia. The Transportation Security Administration has banned all liquids, gels or pastes from carry-on luggage. The U.S. Homeland Security Department has raised the terror threat level to "red" for commercial flights coming to the U.S. from the United Kingdom for the first time since the color-coded system was put in place. British authorities released the names of 19 people arrested August 10 in connection with an alleged plot to bomb flights from the United Kingdom to the United States using chemicals in carry-on bags. (Photo by Chip Somodevilla/Getty Images)

Getty Images News Chip Somodevilla