FCC Creates “Blue Alert” Event Code in Emergency Alert System [pdf]

According to FCC Chairman Ajit Pai, "Similar to the Amber Alerts that many are familiar with, Blue Alerts will enable authorities to warn the public when there is actionable information related to a law enforcement officer who is missing, seriously injured or killed in the line of duty, or when there is an imminent credible threat to an officer."

Is this intended to raise some sort of posse and encourage individuals to enter and resolve dangerous situations themselves? Under what scenario would a "blue alert" be useful? It seems like these alerts should go to other police officers rather than the public.