It's absolutely hilarious to hear all of the arm chair lawyers out there talking about suing AZ, as if that scares them! The Supreme Court has all but gutted any age discrimination lawsuits coming before them. In a mass layoff, where the WARN Act comes into play, you can bet your sweet ass that AZ triple checked to make sure they were acting within the law. They will ultimately send out a breakdown to all those affected showing demographics, etc. I can promise you, you won't find a lawyer anywhere to take a case like this.
Just move on. You are one of the ones that was "too busy" to look for something else, or thought you were one of the "safe ones". You wasted your time, and now look what has happened. But you are not alone. More than likely everyone that got canned did the same thing. The survivors will fall back into their little comfort zones, and pretend there won't be another cutback, but it will. Sadly, 99% of those caught next time will have been "too busy" to look for something else. And so it goes...