Self proclaimed know it all DQ, who knows nothing and understands even less, claims that it is indisputable that chemtrails exist. It is indiputable that contrails exist and that they contain toxins but it is highly unlikely that chemtrails exist. The NBC news story you cite as proof that the media believes they exist actually only shows that contrails exist .It is possible that the contents in these trails can be suspended in the air and then suddenly fall from the sky due to atmospheric changes and rain down jet exhaust and whatever other pollutants might become chemically bonded to the jet fuel. As I said before , the best argument that chemtrails don't exist is the fact that our legislators, FBI etc, like to breathe.Therefore, its warm out so take off your gas masks and go outside.