From the introduction: Edward, Here are those "Rogers' Rules of Ranging" we talked about. I have no idea whether they actually came from Alphonse. Writing all this down doesn't seem like the old man's style. Maybe it started with him, but it's been making the rounds a long time. Who knows how many of us have added to it over the years? If you share it with any FNGs, be sure to tell them not to mistake it for intelligence tradecraft. It's tradecraft for Delta Green agents on the ground. It all comes back to the same old mission. Find the threat. Stop the threat. Cover it up so it's like the threat never happened. User summary: Guidance for players in the Delta Green setting.