[EAS] Missouri switches to partial state AMBER alerts

[Sean Donelan]

Missouri has joined other states using partial state AMBER alerts, instead 
of automatically triggering public alerting devices state-wide.

https://www.komu.com/news/state/highway-patrol-changes-who-gets-emergency-alerts/article_a496a15c-8e7c-11ec-bfe7-9738de0e0e5d.html

California and New York State have used partial-state, targeted AMBER 
alerts for several years.  Texas is the largest state which still sends 
public AMBER alerts state-wide automatically.

There are very few public emergency alerts which require state-wide public 
warnings.  Even multi-state events, like hurricanes and tsunamis, usually 
target part of states.  Instead of state-wide AMBER alerts, it would make 
more sense to select adjacent counties in neighboring states.