Location: Benicia California March 15th 2016 around 4:30pm
Its a perfectly clear day, my father and I were ending our sailing trip and as I look into the sky I see this image of an airplane and I said to my dad "look there's a plane" and he acknowledged seeing the image too.
This plane however seemed like a transparent image of a plane. I could clearly see the outline of the wing span and the cabin. There seemed to be a bright light in the middle as if the sun was reflecting off of it.
Then from the outward of the image to the middle it started disappearing until the white light was the only thing left then vanished.
Fairfield Ca which is close by, has Travis Air force Base and this would probably be a good flight plan for it. I immediately thought I saw a military UFO/ Optical allusion/ Cloud... about an hour later around the same spot I saw the same thing. It seemed as if a plane was calibrating/testing a cloaking tech, or seeing how well they could scale up the tech as this un-explained image of a transparent plane was kind of big. Not like a fighter jet but more like a 747 or a supply plane of sort.
After I saw the image for the second time around the same area about an hour later, I saw other planes in the sky without the same effect. I truly saw some thing I cannot explain today.