Well, when the reptilians invade, we'll all be glad of the US Space Force, eh?
Also, I think it's a plastic film that protects against Sarin gas. I'm sure that wrapping one's head and particular all orifices through which one could breather will prevent being harmed by Sarin gas. I guarantee it, or your money back.
If you want your money back in the event you pursue the guarantee, you'll first have to send me money. Send lots, to make the guarantee worth your trouble.