The Real Gray Man Theory | What it Really Means to be the Greyman

https://bonetactical.com/
Greg Tambone goes into detail on "going grey" in part one of this new series on how to become a greyman. There are lots of myths and rumors on the internet about this espionage technique and how it's tactically applied, but we bring you the facts here from Mr. Bone as always. And in this case, from one of the only men alive who's had to use these tactics for survival.