I did some searching and it seems that the government is using a type of "Cell Broadcast" gateway. There is little info out there on it, but I found a company that is probably behind most of the network-related stuff here -> http://www.cellcastcorp.com/emergency.aspx
Quote from the website: "Issue Emergency Alerts and Mass Notifications:
CellCast Technology’s proprietary Cell Broadcast Aggregator Gateway™ broker enables a government or other authorized entity to use the cell broadcast function built into most cell phones to securely and rapidly transmit an emergency alert of natural or manmade disasters to cell phones in an affected area - - regardless of the size of the area and of the subscriber’s carrier. No database of cell phone subscribers is necessary. Examples of mass notification messages are traffic alerts, industry alerts, timely tourism information, school closings, event schedule changes, and more. "
I do find it odd that AT&T is only in three cities in the country, while Verizon, Sprint, and T-Mobile all have it nationwide already. That is just sad.
Rejection is not failure.