The official cast list has been announced for Survivor: Nicaragua, the 21st season of the Emmy award-winning reality television series. This season features twenty contestants split down the axis by age — the La Flor tribe, consisting of players under the age of 30, and the Espada tribe, with competitors over the age of 40.

Even before the season has aired, at least one competitor is already making a splash: Jimmy Johnson, a two-time Super Bowl winning football coach who retired over ten years ago. At 67 years old, Johnson joins the Survivor halls of history as the second oldest player to participate in the game, surpassed only by original Survivor competitor Rudy Boesch.

In addition to Johnson, the new Survivor cast includes young Kelly Bruno, an amputee who lost her right leg at six years old due to a birth defect, according to Entertainment Weekly. She is the second amputee to play the game of Survivor following Chad Crittenden, the eighth place finisher on the show's Vanuatu edition.

New gameplay elements have been included for Nicaragua, such as the Medallion of Power. The Medallion can be used by a tribe to give itself an advantage during an immunity challenge, but once used, the Medallion is given to the rival tribe to use whenever it sees fit. In order to accommodate the generation gap between tribes, this season's challenges will be less physical than in years past.

Survivor: Nicaragua premieres on September 15 at 8:00 PM. The full tribe list is below, courtesy of E! Online.

La Flor Tribe

Alina Wilson, 23; student/model

Ben "Benry" Henry, 24; bar owner

Brenda Lowe, 27; business owner, former Miami Dolphins cheerleader

Chase Rice, 24; NASCAR jackman/singer

Judson Birza, 21; student/model/musician

Kelly Bruno, 25; medical student, amputee triathlete

Kelly Shinn, 20; student

Matthew "Sash" Lenahan, 30; luxury broker

NaOnka Mixon, 27; P.E. teacher

Shannon Elkins, 30; business owner

Espada Tribe

Dan Lembo, 63; property management

Holly Hoffman, 44; swim coach

Jane Bright, 56; dog trainer

Jillian Behm, 43; ER physician

Jimmy Johnson, 67; retired NFL coach/TV sports broadcaster

Jimmy Tarantino, 48; fisherman/government seafood inspector

Marty Piombo, 48; wine industry executive

Tyrone Davis, 42; fire captain

Wendy Jo DeSmidt-Kohlhoff, 48; retired army officer

Yve Rojas, 41; stay-at-home mom