Lots of background here:
http://www.sfgate.com/local/article/Is-this-Blue-Angels-photo-too-good-to-be-true-9970074.php
Oria says he was at a rooftop party when the Blue Angels started flying. He missed the first time they flew over Lombard, but the next time he was ready with his camera and lens. “I saw them headed that way and sure enough they zipped right through. I shot a burst and caught them in one of the pictures. It turned out to be the most interesting shot I had caught of the event.”
Good stuff. Thanks.