This means that if another country's military is capable of ending a person's life, the USA must find a way to one-up that somehow. Otherwise both fighting forces are equally lethal.
What does she have planned? Do they have a weapon that can destroy the eternal soul?
Our military can already end all life on the planet if they want. Maybe she's gonna build an even more lethal doomsday device? Cobalt bomb? Or something that even cockroaches couldn't survive, so that life would have to re-evolve from worms?
Maybe some real life planet cracker? Or some grey goo runaway nanotech? You know, to be dead certain life will never flourish again on the planet
The US military may as well be a cosmic horror like the Ideon - endlessly gaining power until it's cracking planets and completely destroying the universe, again