Christopher Milam's List: 3.4 DGL Cold Case Discussion

• Reverse 911 is a public safety communications system developed by Cassidian Communications, formerly PlantCML, a unit of EADS North America.^[1][2] It is used by public safety organizations in Canada and the United States to communicate with groups of people in a defined geographic area. The system uses a database of telephone numbers and associated addresses, which, when tied into geographic information systems (GIS), can be used to deliver recorded emergency notifications to a selected set of telephone service subscribers.^[3]
• The system is used to notify residents in emergency situations.
• authorities used Reverse 911 to notify the approximately 1,500 residents of the town to evacuate from the bulldozer's path.^[5]

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• people who exclusively use cell phones or Voice Over Internet Phone (VOIP) services like Skype can register for Reverse 911. Those who have landlines are automatically registered, unless they have unlisted phone numbers. Reverse 911 can also work through PDA devices, pagers, text messages, and email.