71.   Automated Logic last year completed the climate control system for Beijing airports.

72.   Basically, that is what a traction control system does.

73.   Ballantrae, through its subsidiaries Tractech and Kraftube, makes traction control systems for heavy duty trucks and tubing assemblies for air conditioners and refrigeration equipment.

74.   Beacons on the ceiling would track the position of the wheelchair with ultrasonic pulses, and a control system would help the patient move from one room to another.

75.   Blasts of killer electrons in the near-Earth environment also could damage the delicate control systems aboard orbiting spacecraft.

76.   Boeing is also working on a satellite-based air traffic control management system.

77.   Boeing handles the fuselage and all subsystems, digital avionics and fly-by-wire flight control systems.

78.   Boeing Helicopters makes the fuselage and cockpit, and installs avionics and flight control systems.

79.   Both Boxsters come with an optional traction control system that uses both the brakes and the engine to prevent the rear wheels from sliding on slippery surfaces.

80.   Boeing, which built the plane, will send witnesses and a videotape explaining the control system.