21.   He said most of the people in his tour group had not arrived because the local airport had closed.

22.   It is only U.S. commercial airport still closed because of the attacks.

23.   Officials said no long-distance flights were affected by the shutdown but said the airport had been closing regularly in recent mornings due to low visibility.

24.   Several airports closed, and American Airlines canceled flights to Caribbean islands from its regional hub in San Juan.

25.   Smoke and haze from forest fires on the islands of Borneo and Sumatra have blanketed parts of Indonesia, causing some airports to close because of poor visibility.

26.   The airport closed during the weekend when Tropical Storm Iris loomed.

27.   The airport closed Sunday when a plane carrying the top U.N. official in former Yugoslavia, Yasushi Akashi, was hit by heavy machine-gun fire.

28.   The airport closes nightly to cut the noise.

29.   The airport closed Monday except for troop movements, he said.

30.   The Moroni airport was reported closed.