In the First Order's military, a Code Three signified a security compromise within their installations. During 34 ABY, after Resistance operatives Kazuda Xiono and Neeku Vozo were discovered inside the engineering section of Titan, a First Order refueling station, an onboard security officer notified Commander Pyre of the Code Three situation.
The term Code Three appeared in "Station to Station," the eleventh installment of Star Wars Resistance's second season, broadcasted on December 15, 2019.