Ever come across Diacin night vision Google's while serving over in Nam , I have spoken to a few older service members about these , from pilots to gunners whom had access to them and all had interesting stories to share with me , all are now sadly passed away , but the reaction I saw
to one former helicopter pilot when he posted a picture of his helmet and goggles from his fellow servicemen that he never handed back told me their was more to that story than urban legend.
Plus I spoke with a very very intelligent scientist who worked at a government laboratory years ago who applied to test the chemical when the ban on it run out and the government forgot to renew it, He was pulled into a office and told put in a request like that again and you will no longer work here