UFO, or actually unidentified crashing object

En route to Albuquerque from San Francisco I was snapping landscape shots and noticed a jet stream heading straight for the mountains! Worried it might be a little plane, I asked the flight attendants to check out my photo and they talked to the pilot. They hadn’t heard anything bad from radio, and mentioned that we had just flown over a restricted airspace so it could be some kind of government experiment. Cool to have captured it either way!