A Can of Man
Je suis aware
Say what you want about nukes. But in the end, I think they are what kept the cold war from turning hot between Russia and the US. Unless there'll be an alien invasion, deterrence is the only thing they'll ever be used for.
We have no idea what Aliens will be like so we won't know what to use against them. Will we even be able to see them? Maybe they're some kind of concentrated gas. Everyone assumes they will fly around in space craft and be kinda weird looking humans.