User blog comment:BenRG/New Teaser Pic From Monty/@comment-4010415-20140324231806/@comment-10390252-20140325071315

I partly agree with Darkcloud - There would be a psychological element to it. Roman and Cinder would be saying: "We're so badass that we attacked and burned Beacon! Don't mess with us!"

However, I'm fairly sure that something of great importance is stored there and it may not even be a secret. Rather, most people don't realise that it is an item of great importance. The baddies want to either steal or destroy it. My gut feeling is that it is the green beacon although that is based on a particular theory about the nature of the Grimm and Cinder's motivations that may not pan out. We'll have to wait and see.