That mansion... Does not look structurally sound....

I think Blue/Waters are a case of Doppio/Diavolo

Still want to know if Waters and Blue are brothers or really the same person. I do think Waters is smaller of stature and he also has hair while Blue was completely bald. Now imagine what kind of parents would want to name their kids "Blue Waters".

So I guess Blue is plotting a coup. Mr.President hired Gray to track down Red and gave him the list of Blue platoon to give Blue a "distraction".