By 1997, Blevins had been placed in the position of Section Chief. (TXF: "Gethsemane")
The script of "Irresistible" once refers to a character who appears only in that episode as Section Chief Carl Busch. The character's rank is not revealed in the fictional events of the episode itself but is additionally given, elsewhere in the script, as a Special Agent and as its occasional shortened form, Agent, while the episode's end credits sequence also lists the character as an Agent. Similarly, the sentence describing Busch as a Section Chief is the only source that reveals a first name for the character.