Hello, About Okayamas siren.. https://www.youtube.com/watch?v=ZwqsqCq8f_o&list=PLoMx2MZ7aON9t5WCuEMgvd5FGL8SrICGj&index=6 So, this video is not new, and I bet many have already seen this. But I just now realized, that this video was taken on 2016/08/31, which is the date this siren was sound...