I took today's photo, Contrail, through the window of a Qatar Airways jet on a flight from Doha to JFK, new york. According to the on-board flight map we were somewhere close to the border between Finland and Sweden at the time. Gazing out of the window I had seen we were approaching the contrail of a jet traveling on an almost perpendicular heading. As we drew nearer I realized we were going to pass below it so I got my camera ready and took a few shots. This is my favorite of the bunch. The contrail itself disappears into the cloud on the horizon but the sun is casting a shadow of the contrail onto the cloud below. I have to say, Qatar Airways Business Class is the most luxurious business class air travel I've had in my 40+ years of flying around the world.