This picture was taken in Indiana, USA on 25th August 2009.
I took a sequence of aprox 10 photos at about 1 second intervals of the cloud and didn’t see the diamond shape object until after reviewing the photos. I was driving at the time so I have idea what happened to the object.
Since then I have noticed more of these objects that just kind of pop-up and disappear very quickly and are completely silent. So fast in fact that if hadn’t actually caught one with my camera I would not know what I was seeing.”