This looked all the world like a rocket launch with a a second stage over the Sierra crestline somewhere around 10 a.m. this morning....maybe 9:50 or so, didn't check the clock.
I suppose the atmosphere could be playing tricks, anybody know? These shots are in the sequence.
The only scheduled launch that I could find, was 9 or 10 hours earlier from Baikonur Cosmodrome, Kazakhstan !
Choose 'Original' size for best view. Also, EXIF data can be seen on the single image repeated in this gallery.