Since Lee mentioned planes, I have one where I added on it. :)
Critique the Community
Repetition
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Submission Deadline: Fri, 07 Dec 18 04:45:00 +0000
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1) Contrails form behind the engines.
2) Contrails start meters behind the engines,
3) Contrails form at higher altitude.
;)
haha, im not an aviation engineer.