1.   Once again the siren sounds and the people seem to move closer togther,staring up toward the night sky.

2.   Outside, the air-raid siren sounded.

3.   And early Monday morning, air raid sirens sounded in Belgrade, warning of possible resumed NATO attacks in the Yugoslav capital.

4.   And early this evening, the siren sounded to warn that shelling might be imminent.

5.   Another air raid siren sounded.

6.   As the service began, the entire country came to a standstill for two minutes while sirens sounded.

7.   At noon, sirens sounded for two minutes throughout Palestinian areas to mark the anniversary.

8.   Air-raid sirens sounded Tuesday night in Belgrade, but there were no explosions.

9.   Air raid sirens sounded in Belgrade.

10.   During the visit, air-raid sirens sounded and the military judge called for an end to the visit.