Walker also works closely with (and shares a mutual attraction to) Alexandra "Alex" Cahill (Sheree J. Wilson), a Tarrant County Assistant District Attorney, who on occasion puts up a frown if Walker does not obtain results in time. He also gets advice on cases from C.D. Parker (Gailard Sartain, pilot season; Noble Willingham, seasons 1–7), a veteran Ranger (later inducted into the Texas Rangers Hall of Fame) who worked with Walker (and is the only character on the show to address Walker by his first name Cordell on a regular basis) until retiring to operate a small restaurant and bar called "CD's Bar and Grill", a restaurant widely known in the series for its chili. In season 7, two rookie Texas Rangers, Sydney Cooke (Nia Peeples), and Francis Gage (Judson Mills), are assigned under Walker and Trivette's command.