Further documentation plane surveying by am chandra pdf available here. This article is about the conspiracy theory.
1996 report about weather modification. Following the report, in the late 1990s the USAF was accused of “spraying the U. As the chemtrail conspiracy theory spread, federal officials were flooded with angry calls and letters. Many chemtrail believers interpreted agency fact sheets as further evidence of the existence of a government cover-up. The EPA refreshed its posting in 2015. The USAF further clarified in 2005 that the paper “does not reflect current military policy, practice, or capability,” and that it is “not conducting any weather modification experiments or programs and has no plans to do so in the future.
Additionally, the USAF states that the “‘Chemtrail’ hoax has been investigated and refuted by many established and accredited universities, scientific organizations, and major media publications. Proponents of the chemtrail conspiracy theory say that chemtrails can be distinguished from contrails by their long duration, asserting that the chemtrails are those trails left by aircraft that persist for as much as a half day or transform into cirrus-like clouds. Proponents of the theory of the existence of chemtrails characterize contrails as streams that persist for hours and that, with their criss-cross, grid-like or parallel stripe patterns, eventually blend to form large clouds. Proponents view the presence of visible color spectra in the streams, unusual concentrations of sky tracks in a single area, or lingering tracks left by unmarked or military airplanes flying at atypical altitudes or locations as markers of chemtrails.