Now this got me thinking, My theory on what were doing for Richtofen in the EE currently is trying to give him enough power so that he could reverse time by reversing the polarity's of the earth using the HAARP system ( That's actually a thread on this site I read a long time ago, I'm a long time lurker). Anyways if that is what's happening then Richtofen would need to stop to a point in time where he would still have control of the zombies and be able to stop Maxis, so Moon. If the last DLC was a throwback we may see Griffin station again on a much larger scale as a throwback. That is of course is that whole time reverse theory is correct.