Jet engines cannot produce persistent contrails (6 nov. 2014)

(justmec :  All those liars who tell you, and in the Media weather news, that all stripes in the sky are just contrails. They refuse to want you to understand that, for example, that jet engines cannot produce contrails, which is also said in the video, except for those old water-injected engine planes that no longer flutter around. Btw, ever seen a jet fighter with a trail behind it’s ass? No, because otherwise the trail shows where the jetfighter is in the air, typical isn't it, that a jetliner also flies around with the same technology engines (jet engines) but then suddenly shows all trails behind it. )