Source: Johnson joins cast of 'Survivor'

Former Dallas Cowboys head coach Jimmy Johnson will appear on the CBS reality show "Survivor: Nicaragua" this fall, according to a source.

The 67-year-old Johnson, who was unavailable for comment, joins the show's 21st season this summer. The series has been taped in various exotic locations, including Panama, the Fiji Islands, Kenya and Brazil since it started in 2000. This year's show will tape in San Juan del Sur, Nicaragua.

Johnson, who won two Super Bowl titles with the Cowboys in the 1990s, will be grouped with strangers in an isolated area where contestants must complete challenges to win awards or immunity from getting kicked out of the game show.

Since retiring from the NFL as a head coach, Johnson has worked for Fox Sports as a pregame show analyst. The taping of Survivor is not expected to conflict with Johnson's job on Fox.

Several former Cowboys figures have been involved in popular television shows in retirement. Emmitt Smith and Michael Irvin, part of "The Triplets" along with Troy Aikman who played for Johnson, competed in the ABC series "Dancing with the Stars."

Smith won the ballroom dance show in 2006. Irvin appeared on the show in 2009, but didn't win.

Former Cowboys quarterback Gary Hogeboom was a contestant on "Survivor: Guatemala," in 2005 and finished in seventh place.

In nine NFL seasons, with the Cowboys and Miami Dolphins, Johnson compiled an 80-64 record, which places him 49th on the all-time win list.

Calvin Watkins covers the Cowboys for ESPNDallas.com. You can follow him on Twitter or leave a question for his weekly mailbag.