If we told you, we'd have to kill you.....seriously......it's a secret. Airline opsec.
Actually, it isn't a secret!! BUT, after consultation with others, I will leave the post deleted out of an abundance of caution. Suffice it to say, the emergency action taken was not for safety of flight but security. My original post included details that are not classified, but simply unknown to almost everyone. I posted those details because it is my experience that too many Americans do not believe a threat still exist to commercial aviation. I wanted to point out that the threat IS out there. Too many think that if there were a problem Bubba, Jim Bob, and Hoss would take care of it. Just a minute's reflection should make it clear there are ways to endanger an aircraft without Bubba, Hoss or Jim Bob being able to intervene. If anyone tells you that they aren't afraid of terrorism because passengers will not allow it, please tell them their intentions are noble, but they are STUPID!