1.   At Bell Labs, he worked on the development of automatic tracking radar, television transmission, information theory and efficient coding systems.

2.   Bush should first decide what kind of missile shield he wants to build before ordering construction of the appropriate tracking radar.

3.   The lucky few get to go by boat each day to places like Roi-Namur, which has a tracking radar installation.

4.   It also has important tracking radar and a very quick chain-of-command structure.

5.   The planes have HARM missiles that can detect the tracking radar of anti-aircraft launch sites and ride the beam down to the transmitter before exploding.

6.   The United Nations said its tracking radar failed to trace the shell and could not immediately confirm who had fired it.

7.   U.N. officials said their tracking radar did not trace the path of the shell so they could not immediately comment on its origin.