Earlier quoted context omitted.
Actually, it's not clear at all. The only clue I found that it's only a virtual plan is one mention of "WebRTC" in the third image. Far from obvious for most non-programers.
I'm going to get downvoted for this but I cannot believe what I'm reading... we're talking about a nuclear attack involving inter-continental missiles. I'm far from an expert on this subject but I'm pretty sure you cannot build one in your garage on your own. (and especially not with a simple schema on a white board).
If they actually do get anywhere, AFAIK possession of radioactive material is illegal, so that's when you could actually arrest them.