Viper 7961NC is a Viper Mark II piloted by Louanne "Kat" Katraine that survives the Battle for the Tylium Asteroid Template:TRSThe Hand of God (RDM).
She later pilots it during the events revolving around the initial events with the Pegasus. ("Pegasus" "Resurrection Ship, Part I")
A Viper Mark VII is later seen with the same markings (TRS: "Exodus, Part II"), and is apparently still in service well after the Battle of New Caprica (TRS: "Crossroads, Part II").