Most popular warning/air raid sirens from different countries.

Hello friends, Welcome back after long time. Today, I was in mood to create new video, as my one video, that is related to death penalty from different countries, got more than 0.8K views. I was very happy. So, now I will start uploading videos regularly. Now, let's come back to this video, where I have shown most famous or popular air raid sirens, both electronic and mechanical, used in different countries. These type of sirens are used for air raid warning, tornado drills, mock drills, and also used in fire stations to signal firefighters in case of fire, so that they come to fire stations as soon as possible, take the fire trucks, and rush to place where there is fire. In next video, I will upload the sounds of these sirens. Comment which siren is your favourite!! Softwares used: AlienArt.io and Microsoft Clipchamp Music used: Sinister by Anno Domini Beats Thanks for watching.