U.S. Air Force Chemtrails Report

Contrary to rumors of “conspiracy theory”, the Department of Defense first published “Chemtrails” in 1990 as the title to a chemistry course for new pilots attending the esteemed US Air Force Academy. The term “Chemtrails”, and its implied meaning was eventually adopted by civilian observers to describe unusual jet contrail emissions.

U.S. Air Force Chemtrails Report – 1990 .pdf file