The character Alberta Green is named for actress Alberta Watson, whom show creator Joel Surnow originally wanted to portray the role that eventually went to Tamara Tunie. An Agent Watson was later the recipient of a phone call. Ironically, Alberta Watson later joined the show during the fourth season as Erin Driscoll, the new head of CTU in Los Angeles.
Jack's recap monologue is now different: "There are terrorists planning to assassinate a presidential candidate, my wife and daughter have been kidnapped, and the people that I work with may be involved in both. I'm Federal Agent Jack Bauer. This is the longest day of my life." [The closed captioning still showed his old monologue, however.]
The character Ted Cofell is named after one of the producers' assistants, Anne Cofell.