[quote=@Lmpkio] IREC operates on Earth... uhh, the organizations it sells its HPVs to? I guess NASA being one of them. And MAD? Tried looking at the intro post and I have no idea what MAD is. Ok then, just a one layer HPV generator can do instead of having two layers. [/quote] Mutual-assured destruction. Given that most HFVs seem to be powered by fusion reactors, the threat of war escalating into a nuclear one is still quite relevant. Why does NASA need a military robot? What does the forcefield affect? How does it work?