https://joy.videvo.net/videvo_files/video/free/2016-11/large_watermarked/161022_019_SanFrancisco_4K_preview.mp4 Fire Alarm Call Box in San Francisco A stationary shot of a fire alarm call box in San Francisco, USA. 1080palarmamericaamericanbaycaliforniacitycityscapeemergencyfirefire alarmfire alarm call boxFranciscosansilicon valleyStatestownunitedurbanUSusa