Observe that contrails are different compared to the grayish "vapor trails" occasionally seen when flying small with flaps prolonged. They are fashioned of liquid drinking water through the fast decompression and cooling of air previously mentioned the wings. RDoug: I recognized the identical thing straight away — The "M", "E", https://sethclven.widblog.com/92474968/indicators-on-was-ist-wolkenimpfung-you-should-know