who played cd parkerwhat was cd parker's last episode on walker?did trivette die in walker texas rangerhow old is noble willinghamfirst cd parker on walker texas rangerwhy did cd die on walkerdid alex cahill-walker diehow did walker texas ranger endwhy was c.d. parker killed offc.d. parker deathcd parker death episodenoble willinghamwho played c.d. in walker texas rangerwho was the original c.d. on walker texas rangernoble willingham deathis noble willingham still alive