1.   Enemy radar must have detected our approach, for Hurricane fighters came out to intercept before we reached the target.

2.   Enemy radar must have detected our approach.

3.   The approaching planes were detected by radar.

4.   An official who asked not to be identified and was familiar with the investigation said investigators believed that the plane had been detected by radar at National Airport.

5.   As the storm approached, radar detected an intense vortex embedded within the eye wall of the typhoon which may have contributed to the extreme wind.

6.   Brown dots appear when the radar detects an aircraft.

7.   But it probably was not used in the normal fashion, with its operators relying only on their own local radars to detect the target.

8.   During the April shuttle flight, radar detected evidence of an ancient network of rivers and tributaries several feet beneath the Sahara that was more extensive than previously believed.

9.   Federal Aviation Administration radar reportedly detected a blip merging with the jet shortly before the explosion.

10.   Japanese officials were particularly concerned when radar detected North Korean aircraft approaching.