I typed out a big long response, and I accidentally changed pages and lost is so I don't feel like typing it out again. Basically the gist of it was that I doubt we know half of what the US military has. Every war we fight there seems to be all this new tech never seen before. The Nuke was a revolutionary weapon that was used with much regret. You can't just go in throwing all your trump cards with flying saucers and energy beams from space because everyone will know you have it and try to hack, spy, and sabotage your stuff. Who knows what we've launched up into space? Flying saucers sounds funny, but the US military has tried to build them before.