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Merry Chemtrails, My Fellow Chemtrailers...

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posted on Dec, 31 2008 @ 07:50 PM
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reply to post by lel1111
 


No, but planes generally do have jet engines these days, at the hights they tend to fly at the hot air from the engines generally have about the same affect your breath does in cold weather.
Depending on the weather at their altitude, they can last for a few moments to hours, much as cloud cover does.



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