I've observed that condensation effect many times on different jets. Sometimes there are little "curls" at the wing tips, sometimes a "donut" forms, but the condensation that the F-22 in those pictures causes is really outstanding. I wish I could show you guys the high-res pictures of that F-22 that the AP photo service has online. Alas, a username and password are required and I'm not at liberty to copy and show those pictures (media use only/copyright reasons).