51.   And under a new aviation security law, airlines are required starting next weekend to inspect all checked baggage for explosives.

52.   At Dulles International Airport near Washington, some seasoned travelers appeared confused and frustrated as they were directed to a line for checked baggage inspection.

53.   Besides paying the extra fee, passengers are to have their checked baggage screened by X-ray machines, hand searches, bomb-sniffing dogs or other means.

54.   By Thanksgiving, travelers should start seeing more law enforcement officers at screening stations and more of their checked baggage undergoing inspections.

55.   Equipment at many airports can screen checked baggage for explosives.

56.   Last month, airlines substantially increased scrutiny of checked baggage for explosives.

57.   Passengers may carry unloaded guns in checked baggage.

58.   The Duesseldorf airport said in a statement that all checked baggage will be examined through X-ray machines, not spot checks as normal.

59.   The FAA also is moving to require all checked baggage to be screened for explosives and looking at whether to prevent unaccompanied luggage from being loaded onto airplanes.

60.   The measure requires airports to expand inspections of checked baggage, and explosive detection systems are to be in place by the end of next year.