If anybody remembers Tanagram, they did the first development of Squad X years ago. Way back then there were using eMagin displays. Blue Force Tagging is a Huge Step Forward.

The system also comes with a labeling mechanism that allows service members to flag objects, buildings or people.

“If there is another soldier on the other side of that wall, and he looks that way, he’ll see a blue icon inside of that wall so he’ll know where his friendly force disposition is,” Roth said.

https://www.nationaldefensemagazine.org/articles/2019/9/4/army-updates-night-vision-goggles