This seems to be the explanation for that "mystery missle": it was merely a jet going across the sky, but due to the angle, the contrail only looked vertical.
See? Look at this:
That's not a photo of the November 3 "mystery missile". Rather, it's from December 31, 2009. And it's the same thing going on. Just a jet.
It's all explained at contrailscience.com. They got tons of pictures like this.
This of course leads to an even bigger mystery: WHO THE HELL DEVOTES THEIR TIME TO STUDYING THE SCIENCE OF CONTRAILS?!?