This spectacular footage shows several America fighter jets going through the infamous Mach Loop in western Wales.<br /><br />Various USAF (United States Air Force) F-15 fighter jets are seen twisting and turning through the Welsh valleys on August 1.<br /><br />Several of the planes passing through the valleys are "fluffing up" as clouds appear as they fly past.<br /><br />"Fluffing up means when there is good moisture in the air, as they [the planes] bank or are going fast, fluff comes off the plane. This does not happen too often as the moisture has to be right," the filmer told Newsflare.<br /><br />The Mach Loop consists of a series of valleys and is used for low-level training areas by fast jet aircraft. It one of the only places where photographers can capture aircraft flying below them.
