They
have done testing like that. Look it up, man. Stop asking me to provide every little bit of evidence. This isn't my job; I'm just here talking.
Your video showed condensation forming on the upper wing of a KC-10 tanker and streaming off.
Evidence is subjective. I see (more so) a plane spraying stuff. Your counterargument is 'That's not how cloud seeding works.' To which I have said twice now, why are you talking about cloud seeding? What real argument do you have that this isn't a spray plane? You're just blindly asserting it's not with some irrelevant link to cloud seeding planes and how they spray their load.
In the main,
You guys are asking for evidence that, if I had it (assuming I am correct and there is a project) I would be dead. Well, maybe not now, but maybe prior to 2008, as now they want people like me to acclimatize people like you to this reality. The point is, looking for the 'smoking gun' is just childish and naive. The type of proof that would satisfy you is to have some person explicitly lay it out on a mainstream news outlet. Not going to happen. I do have Holdren confirming that weather control is possible on a mainstream news outlet, though.
So if you want to see planes spraying chemtrails, then just look up into the sky. It happens every day, especially in the US.
Stop asking me for the wrong type of evidence. I mean you guys gotta learn to conspiracy a little bit. I don't go into the philosophy forum asking for a link to 'truth.'
Also, if you really want to know so badly, just wait a couple years. I can assure you eventually they'll come up and give you the type of evidence you require. Freedom of speech, and thus, me, may not be around, but you guys will see the evidence you're looking for eventually.