In addition to genetic modifications that could conceivably be engineered to create a new "species" of super soldiers, another technology has entered the arms race: nano-technology.
One sees here the fantasies of science fiction coming to life: "bio-suit" interfaces with the human mind and body, nano-robots inside a body to repair wounds, enhance muscular function, endurance, perhaps even to inhibit normal moral constraints and emotions. Additionally, one can envision nano-technology being employed on the spaceships of the future, to repair microscopic hull breaches from micro-meteors. The possibilities are as endless as the human imagination itself. Indeed, early theorists of nano-technology envisioned the ultimate "nano-doomsday," a small nano-machine instructed to do nothing but turn everything it encountered into "gray goo."
Of course, all of this is in the future - one would hope, the distant future as far as the malevolent applications are concerned. Yet, lest we forget, it was only in 1986 that Eric Drexler wrote his popular expose of nano-technology, Engines of Creation, and only a short time before that that IBM had managed to spell out its corporate initials by engineering xenon atoms into the letters "I", "B", and "M." Not to be outdone, Bell Laboratories followed up that engineering-on-the-atomic scale with something even more impressive: constructing the first artificially made atom. It is, truly, a kind of nano-alchemy.
So, consider those rudimentary beginnings, and the linked article above, and you'll see how far we've come, in a very short time. And it has only just begun...
....See you on the flip side!