Last month marked the 17th anniversary of 9/11. With it came a new milestone: we've been in Afghanistan for so long that someone born after the attacks is now old enough to go fight there. They can also serve in the six other places where we're officially at war, not to mention the 133 countries where special operations forces have conducted missions in just the first half of 2018. The wars of 9/11 continue, with no end in sight. Now, the Pentagon is investing heavily in technologies that will intensify them.