1.   Fog prevented some helicopters from taking off.

2.   Fog prevented this American cargo plane from landing at Tuzla, the base of operations in Bosnia for the United States contingent in the NATO-led peacekeeping force.

3.   Russian spokesmen later said fog prevented the military from defending the original column, but the survivors say the weather was clear much of the time.

4.   Earlier, fog had prevented government forces from reaching Ilaga, which is surrounded by towering mountains and thick jungles.

5.   Fog prevented his flight, and it was not clear if he would try again Friday.

6.   Fog prevented the driver of a car with five passengers from seeing an oncoming train at an open railway crossing.

7.   Fog prevented that race from being held.

8.   Fog prevented two dozen military flights carrying American soldiers and equipment from landing in Tuzla, the industrial town in northeastern Bosnia where U.S. forces will be based.

9.   Heavy fog prevented helicopters from reaching the crash site Thursday, and bad roads stopped rescue vehicles miles from the wreckage.

10.   He said the rain and fog prevented Vaughn from seeing the parked Ford Escort.