[EAS] Cancelling Amber alerts

[Dave Turnmire]

Historically Idaho hasn't issued any type of "cancellation" message 
regarding Amber alerts.  I'm aware that some states do.  I would like a 
little feedback on what event code that you use and whether you always 
issue these, or only under some circumstances such as the alert being 
cancelled prior to the CAE expiring.  And, for that matter, if any of 
you have any specific reasons that you think such cancellation messages 
should NOT be issued via EAS.

And while we are at it.... I'm curious whether WEA provides any 
mechanism for similar cancellation messages.

Thanks

Dave Turnmire
Idaho SECC chair