GREEK ALPHABET SOUP
'(<a href="http://www.j-archive.com/media/2008-07-25_DJ_27.jpg" target="_blank">Cheryl of the Clue Crew airmails us something from The Thunderbirds in Las Vegas, NV.</a>)  Several times in each show, all 6 Thunderbirds, flying 18 inches apart, team up in <a href="http://www.j-archive.com/media/2008-07-25_DJ_27.wmv">this</a> formation named for a Greek letter'
delta formation