Biography[]
Tom Cronin served assistant to Deputy Director Pamela Landy, likely as Associate Deputy Director [of the CIA] or immediate secretary to Landy, appearing in both the The Bourne Supremacy and The Bourne Ultimatum.
Over the course of The Bourne Supremacy and The Bourne Ultimatum, not much of Cronin's position at the CIA had been detailed, but it is likely that he served either as Associate Deputy Director [of the CIA] or a secretary to Landy, making sense because he reported and engaged with regularly throughout the two films.