I was driving home yesterday when I noticed a peculiar contrail in the sky. Check this out:
It seemed weird to me that it was circular because they're usually straight. At least around here they are.
Then I came across this article thanks to Twitter about an air show happening further north and that planes performing in it would be flying over: http://www.cottagecountrynow.ca/community/southmuskoka/article/1369946
Ah-hah, mystery likely solved.
What did we ever do before the internet??