Foreshortening with a long lens. The A/C has minimal apparent angular velocity because it is coming almost directly toward the camera; the contrail is being blown at right angles to the flight path. FYI, that equates to large angular velocity. (Look that up in your Funk & Wagnalls...)
But please don't let me upset your fantasies with mere science...
Carry on!
Actually, are we sure that Warren was using a long lens and not just full zoom? Not that this would change the answer, but if the information is available I’d like to have it.
Bottom line though is that unless the Warren photos are completley photoshop creations from beginning to end, we have an object that cannot be a missile. That would be true even if it weren’t UPS 902...though it is.