Under and Alone is currently being made into a feature film directed by Gregor Jordan and starring Mel Gibson as William Queen, in 2010

http://en.wikipedia.org/wiki/Under_and_Alone
Warner Bros. Pictures is in talks with Antoine Fuqua to direct Mel Gibson in his next movie, "Under and Alone."

Variety reports the film has been written by Ned Zeman and Daniel Barnz, who developed the idea with Gibson.

"Under and Alone" is based on the real life of Vietnam veteran William Queen. After leaving Special FOrces Queen joined the Bureau of Alcohol, Tobacco and Firearms and, working undercover, became a full member of the San Fernando chapter of the Mongols motorcycle gang.

The film is due to start shooting this summer.

http://www.monstersandcritics.com/movies/news/article_4802.php/Gibsons_Under_and_Alone_Moving_Forward