31.   U.S. attack helicopters patrolled over the area Thursday trying to locate any pockets of al-Qaida survivors.

32.   Two police helicopters patrolled the skies overhead.

33.   Whirring U.S. helicopters had patrolled over Kabul throughout the night Sunday, making their first sustained appearance over the capital.

34.   Israel artillery fired back in retaliation, and its helicopters were patrolling the region, an AFP correspondent said.

35.   Israeli helicopters patrolled the skies over southern Lebanon while fighter-bombers broke the sound barrier over Beirut.

36.   Israeli helicopters patrolled the skies over southern Lebanon while fighter-bombers broke the sound barrier over Beirut, police said.

37.   Airspace over Lima has been declared off-limits to all aircraft on Saturday and Sunday, while police helicopters patrolled the area.

38.   Earlier, a dozen explosions were heard, apparently from grenade launchers, as two attack helicopters patrolled the area.

39.   Israeli helicopters were patrolling the region, an AFP correspondent reported.

40.   Police helicopters patrolled the skies.