It's good to look back on how far back they had stuff that seemed like future tech even decades later. First commercial satellite phones were developed in '98, based on satellite phone technology Lyndon Johnson used publicly in '63, meaning that the tech had already been tested and was working for who knows how long privately.
Yea, it's an insane fact. Darpa has a list on their website where you can see a whole bunch of dates for now disclosed technology that they developed way before it was commercially available, and obviously that's only the things that darpa is allowed to share.