You can hear those choppers start in the video above. Earlier designs of the siren were originally called the Chrysler-Bell Victory Siren and were produced in the 1940s during World War II.

It also cites Arizona law, which states that authorized emergency vehicles can go through red lights and stop signs if they slow down “as necessary for safe operation” and if the driver “sounds an ...

Another woman told police she heard a siren, but described it as being two ... and if the driver “sounds an audible signal by bell, siren or exhaust whistle as reasonably necessary.” ...