1.   Without this information, the controllers only see a radar screen with signals that indicate planes.

2.   Air-traffic controllers often see birds on their screens, appearing as blips that look just like airplanes.

3.   But Buckingham said controllers had seen no indications of fire.

4.   For a few more moments, controllers could still see the blip of the plane on the radar.

5.   From the Pittsburgh airport, air traffic controllers saw dense smoke rising to the northwest.

6.   It will also let controllers see more weather information on their traffic screens.

7.   The airport tower is not tall enough to allow air-traffic controllers to see the east end of the airport.

8.   The backup through the host computer provides more information than DARC, but still provides less than what the controller usually sees.

9.   Air traffic controllers saw the fire and ordered the pilot to abort the takeoff, the report said.

10.   Controllers see planes passing each other at different altitudes as two radar blips converging, then diverging.