61.   New air traffic control systems will have to be found to move an increasing number of aircraft safely, flying more closely together than they do today.

62.   Of course, airports and air traffic control systems also receive money from taxes.

63.   Overseas, there is a need for further readiness on the part of air carriers, airports and traffic systems.

64.   Pilots and owners of general aviation aircraft worry their costs will rise under a plan to have users pay for upgrades to the air traffic control system.

65.   Privatization of air traffic control systems has been the preferred method of change worldwide.

66.   President Bush urged Congress Monday to study the idea of replacing the strained federal air traffic control system with one run by private enterprise.

67.   Pena said modernization of the FAA and air traffic control systems has been one of his highest priorities.

68.   So the question is whether the FAA and air traffic control system are ideally set up to respond to needs for additional capacity.

69.   Some maritime officials have talked of a much more rigidly controlled traffic system, as in airports.

70.   That is because airports and the air traffic control system are still owned and operated by government agencies and have neither the flexibility nor the incentives to operate efficiently.