Against oxygen. Here is a first. I just flew in today on Southwest from Atlanta to Orlando. While my mask was hanging off one ear the whole flight, I saw a guy on the plane walk past me who had on a cheap mask covering his nose and mouth, a thick mask over the cheap one that covered his mouth, and a plastic face shield over both of the masks. Wow, triple protection against breathing in oxygen. In Atlanta, where face masks are required everywhere, I managed to return my rental car, take the train to the airport, go through … Continue reading Triple Protection