Chattanooga skies continue to be covered with two cloud systems. One seems to be natural cloud cover, but the context is a continuing haze. The continuing haze is unusual, and daily over the city. This video from the History Channel is 45 minutes long, and explains how far men have gone in their understanding of the weather. The weather was weaponized by the U.S. during the Vietnam war in the feds’ effort to destroy the supply lines between North and South Vietnam.