TEPAT88 Twin tail A twin tail, also called an H-tail, consists of two small vertical stabilisers on either side of the horizontal stabiliser. Twin boom A twin boom has two fuselages or booms, with a vertical stabiliser on each, and a horizontal stabiliser between them. Number of fins - usually one or two. Multiple fins - examples include the Lockheed Constellation (three), Bellanca 14-13 (three), and the Northrop Grumman E-2 Hawkeye (four). Examples include the Northrop P-61 Black Widow, P-38 Lightning, de Havilland Sea Vixen, Sadler Vampire, and Edgley Optica. Examples include the Antonov An-225 Mriya, B-25 Mitchell, Avro Lancaster, and ERCO Ercoupe. If exercising along with an avatar on TV is still not enough motivation to get boomers moving, there's a game on the Wii that should get the job done: Just Dance.|Rocket City United