|  |  | Stunning Snap of Shock Waves On a Below-Mach-1 F-18 Hornet! www.flickr.com — Look for the long, near-vertical-watery-like lines attached to the U.S. Navy Blue Angels F/A-18 Hornet fighter jet that is flying slightly below Mach 1 (well within the transonic flight regime). Some (perhaps all) of the white stuff, i.e., the condensation, is the formation of a cloud(s) due to the Prandtl-Glauert Singularity.More... (General Sciences) Comments Email Added 2008-07-08 12:10:03 vroom101