power mode/passive recharge: https://www.wsj.com/articles/here-comes-smart-dust-the-tiny-computers-that-pull-power-from-the-air-1541689224

armor: https://science.howstuffworks.com/liquid-body-armor.htm

https://futurism.com/2018-will-be-big-on-special-forces-exoskeleton-tech

cloak is still up in the air, but i don’t suspect it will be for long…