After more than a decade of trolls, lies and deception, here’s a letter posted on Skywatchers Party UK fb page that LongIslandSkywatch reposted. I don’t know the details of the correspondence but it’s an indirect admission of spraying the atmosphere.  Read - “some substances which may cause harm to the environment may be prohibited from release entirely while other substances may be subject to a permitting scheme for particular purposes” – the letter conclues with a “best wishes.