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 Someone needs to get a bunch of time-lapse videos of the planes laying the chemtrails, and them turning to yuck chemical clouds  
 Go for it. I'd love to see this. Consider it a challenge  
 I've only seen it once in real time here.

Southern Utah skies get hit a bunch, around St. George. 
 I found a few videos online, but they don't capture it very well.

Looks like one needs a very wide angle lense and then the camera needs to track the movement of the clouds by tilting, and possible by physically moving with the clouds.