It certainly does not help that the product was labeled "Lockheed Martin F-35 lightning II". I think aside from the mentioned issue of legality of being bullied over a design thats existence was driven by our tax dollars, you have to wonder about legality of copyrighting of a shape. Ive seen on sites where other authors would model a corvette for example, but market it as "60s type muscle car".
Lockheed certainly has the right to object to where their name is being used, but I suspect this is much more than that. Cashgrab, as Wayne22 stated. .......Big kid in the sand box.....gimme your lunch money!!!!!