Special Agent Vivian Blackadder (Robyn Lively) is a former FBI agent who joins NCIS after the attack on the USS "Cole", in which her brother, Rex, was killed. Despite being a special agent, she seemed to be more focused on avenging her brother's death by any means possible rather than attempting to work with the rest of the team. Her obsession with getting revenge often drew Gibbs' ire—Gibbs told her to stay focused on their case or he would send her back to the FBI. Later, in the "JAG" episode "Meltdown", she blew an NCIS operation to capture a terrorist planning another attack. Although it is not shown, it is implied that she either returned to the FBI or was fired from NCIS for good because of her mistakes. She is the only major character who appeared in the pilot episodes from "JAG", and not in the series "NCIS". Vivian Blackadder appeared in the "JAG" episodes "Ice Queen" and "Meltdown".