51.   The tool of destruction happened to be not missiles but passenger jets.

52.   The thin contrails of passenger jets etched across the sky like chalk marks on a blackboard.

53.   The weather center can warn a passenger jet from Japan to avoid a storm near the International Date Line.

54.   Their goal was to learn to maneuver fuel-laden passenger jets into giant buildings.

55.   They are working to open their space to send passenger jets over the polar region, which would generate millions of dollars in new overflight fees.

56.   This instant passenger cabin was more comfortable and met stricter safety requirements than those on most full-time passenger jets.

57.   Three passenger jets downed so far.

58.   TNT Vacations is now using UPS passenger jets on Bahamas and Aruba charter vacations.

59.   U.S. companies that use passenger jets to ferry goods to and from Asia are hurrying to find alternatives.

60.   U.S. officials strongly endorsed that view, briefing his aides on such developments as the use of passenger jets to fly cocaine into Mexico from Colombia.