On the action TV show "The Unit", what was the communications call sign for Sergeant First Class Bob Brown (Scott Foley)?

The American action drama TV series that aired on CBS in March 2006 - May 2009 was called "The Unit". It was a series that featured the domestic lives of team members (the effects of their careers on their wives and girlfriends). This was taken into account while the men were on top-secret military missions in foreign countries.

In this show, the operational unit had a chain of command (command hierarchy) that is unknown and not part of the normal military U.S. Army structure. When the men in the unit received confidential orders, they worked with individual call signs when they deployed on missions throughout the world. A key player was Sergeant First Class Bob Brown and his operational call sign was "Cool Breeze". He would often work with Sergeant Major "Snake Doctor" Jonas Blane (Dennis Haysbert), Master Sergeant "Dirt Diver" Mack Gerhardt (Max Martini), and Sergeant First Class "Betty Blue" Charles Grey (Michael Irby).

This show isn't just a bang-bang shoot'em up show. It involved realities where very difficult decisions were made. The stress of those who support others in combat positions was effectively noted, and it gave a true glimpse on how those who are serving as combat soldiers often receive little or no support from human beings who are not in the military.