it should be checked every time before you so make sure that its working
if it does, then its fine
but if it doesn't, then change it
Often, there was an "all clear" signal, a steady tone from the siren, for about 7 - 20 seconds.
If you hear a siren there is nothing you can do though if you see them first cover your ears
An air raid siren. The song, though often cited as being about Vietnam, was probably about WWII.
Figure out where the siren is coming from and get out of the way of the emergency vehicle by pulling over or moving out of the way.
Pull to the side or on the next lane.
a baluga whale siren
Sirens is the plural of siren
Fire department siren.
siren i think it is siren
Gao Siren was born in 1944.
Siren Sundby was born in 1982.
A siren is a output device