The Unit season 4
season of television series

The fourth and final season of The Unit started on September 28, 2008, and concluded on May 10, 2009. The season included 22 episodes and introduced Bridget Sullivan (Nicole Steinwedell) and Sam McBride (Wes Chatham), new members to the unit and the team.
A fifth season was planned as the show's last. However, on May 19, 2009, a week after the season finale, CBS declined to renew the series along with Without a Trace.
For the 2008-09 U.S. television season, the fourth season of The Unit ranked #43 with an average of 10 million viewers.
Cast and characters
Main cast
Dennis Haysbert as Sergeant Major Jonas Blane, a.k.a. Snake Doctor
Scott Foley as Sergeant First Class Bob Brown, a.k.a. Cool Breeze
Max Martini as Master Sergeant Mack Gerhardt, a.k.a. Dirt Diver
Michael Irby as Sergeant First Class Charles Grey, a.k.a. Betty Blue
Robert Patrick as Colonel Thomas Ryan, a.k.a.
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