51.   It is expected later this month to announce plans for a satellite-based air traffic control system.

52.   It will also be necessary if the air traffic system is to keep up with demand.

53.   Jim McCrank, chief of traffic systems for Caltrans in Oakland, said the cameras will allow officials to verify what motion detectors only indicate.

54.   Lockheed Martin agreed to sell a contract it had with the Federal Aviation Administration to assess bidders for air traffic control systems.

55.   Lockheed Martin agreed to sell a contract it has with the Federal Aviation Administration to assess bidders for air traffic control systems.

56.   Mineta is a proponent of speeding up the building of new runways and of enhancing the air traffic control system.

57.   Modern air traffic control systems are already in use in other countries.

58.   More people flying more places has taxed the air traffic control system and jammed airports, causing bad tempers and frayed nerves.

59.   Nav Canada, the only private company in the world to run a national air traffic control system, has proven the most intriguing to policy makers in Washington.

60.   Nearly every week there is new evidence to that effect in a rash of recent failures in the air traffic control system.