what is gibbs rule 91

Rule 91 is one of the many rules that Leroy Jethro Gibbs, a character in the TV show NCIS, follows. According to, the rule is "When you walk away, dont look back." This explains why Gibbs named his boat Rule 91, as he was planning on walking away from the NCIS team after his suspension following his treatment of a suspect. The rule has become particularly important in the show, as it was the name of Gibbs' boat, which exploded at the end of the last season. In the Season 19 premiere, "Blood in the Water," Gibbs and McGee discussed Rule 91 again, with McGee saying that it is in direct violation of Rule No. 1 — "Never screw over your partner." However, as Gibbs points out, the pair are no longer partners after his suspension from the team, meaning that Rule 91 is very much in force.