Not easy to find one man in a haystack. Guerrilla warfare has always been insanely overpowered as a defense tactic anyways, as are terrorist attacks.
The US can realistically only be challenged militarily by Europe or Asia, assuming a unified continent, and the US is on the offensive. If it’s defensive, the US might put up a good fight against the rest of the planet.
Normally I’d say the most effective way to attack a western country would be to target kids in school playgrounds, but the US seems that regularly anyway so it would be lost in noise. Perhaps target Amazon delivery centres with drones will strike fear into the true heart of America.
Your second paragraph doesn't even make sense, but I'm thinking you just wanted to hop on the "america bad" train for a moment, so maybe it doesn't matter.
none of those documents exist since it was probably never documented to begin with so we will never know I guess.