1.   Air pumped in as the warning sirens died away.

2.   Amid the squeal of warning sirens and the pounding of nearby shells, a population exhausted by war debates the war.

3.   An hour often passed between the first warning siren and arrival of the first planes.

4.   NASA also revamped its safety procedures at JSC and has installed warning sirens around the facility to be sounded in case of emergency, Harlan said.

5.   Some areas have up-to-date warning sirens, which produce various tones to alert residents about various hazards.

6.   Suddenly warning sirens were heard, and viewers of CNN and MSNBC learned along with the Iraqi people that an attack was probably imminent.

7.   Suddenly, after weeks of warning sirens, the Cowboys may begin to sense an all-clear.

8.   The busy signal is an warning siren.

9.   The closing of Maine Yankee brought heartfelt relief to those residents who had worried that the warning sirens would break the coastal calm here with a nuclear alert.

10.   The warning sirens gave many time to act to save themselves.