21.   China was allowed to buy technology with dual-use applications, from supercomputers to satellite guidance systems.

22.   Cruise missiles have been fitted with satellite-based guidance systems making it possible to readjust their course in mid-flight and, in theory, to achieve pinpoint accuracy.

23.   Currently, that guidance system relies on Russian-furnished hardware for the pointing reference that steers the station.

24.   Early Thursday, one of three guidance systems that help to steer Endeavour generated slightly inaccurate readings for just under an hour, before resuming normal operation.

25.   Early studies indicated a faulty guidance system caused the rocket failure.

26.   Early Thursday, while preparing for a training run on a repair spacewalk, a Mir crew member erroneously disconnected a cable that feeds power to guidance systems.

27.   Engineers who once designed launch vehicles and guidance systems now are creating telecommunications switches and fiber optic routers.

28.   Fearing hopes to solve that problem soon and begin work on a guidance system that will allow microfly to fly independently.

29.   Federal agents in California quietly arrested a Chinese citizen last week and charged him with trying to obtain a component vital to missile guidance systems.

30.   First, Afghanistan and Sudan have more distinctive geological features that the Tomahawk guidance system can more easily follow.