71.   The documents were seized by the authorities when he was arrested Saturday at Dulles International Airport as he prepared to board a flight for Zurich.

72.   The government quickly tightened security regulations then, and all passengers are now required to go to an airport counter to present photo identification before boarding any flight.

73.   The flight attendants also want a system in place that would make sure that everyone who checks in a bag actually boards their flight.

74.   The Revolution gathered for a sendoff party in Cambridge Wednesday before boarding a flight to Pisa, Italy, where they will prepare for the Major League Soccer season.

75.   They failed to board their flight at Phoenix Sky Harbor International Airport.

76.   Those photographs were seized by the authorities when he was arrested Saturday at Dulles International Airport as he prepared to board a flight for Zurich.

77.   Thursday night, the authorities at New York airports stopped two groups of men as they tried to board flights.

78.   Traveling to Britain, they boarded a flight from Heathrow Airport to Pakistan, which they entered using multiple-entry visas.

79.   Two years ago, an Egis system set off alarms at a German airport when a military officer who had been training with explosives attempted to board a flight.

80.   Travelers are especially vulnerable at security checkpoints prior to boarding a flight.