My sister lives in Easton, Maryland near the airport.  She heard all this comotion outside so she went out and all these yaks were flying overhead.  She took this with her digital still camera.  I added the music.  I believe there's a Mustang in there.

http://www.youtube.com/watch?v=pO7dozvmZOg

Here's one with out the music,  these planes sound nice.

http://www.youtube.com/watch?v=uaU9Hw28psQ