The original source for that article was The Resister, an internal underground publication, published sub-rosa by and for members of the US Army Special Forces during the Clinton era. The author was someone who lived that comic book in the real world.
The ability to conduct Basic Tradecraft is an imminently practical and useful art. Like primitive fire making skills, the fundamentals have been around for centuries...and are still competently practiced today. Everywhere.
Just sayin'...
