During the testing, residents in the area will hear an alarm sound, followed by a voice message repeated three times in English, Spanish and Navajo, concluding with a wind down siren sound signifying the end of that message. This process may repeat several times during the testing period. Testing may be postponed in the event of rain or smoke in the area. To hear the siren sounds that will be used or to read more about the Museum Fire flood area siren alerting system, please visit www.museumfloodprojects.com/sirensystem