[1] In 2011, he was selected for the Hostage Rescue Team, the elite special operations unit of the agency, serving in the Blue Squadron.

[3] Two years later, he was part of a raid in Syria along with Delta Force, involved in rescue efforts of Kayla Mueller who had been taken hostage by the Islamic State.

[3] Driscoll returned to New York in 2019 to work as a supervisory special agent to establish and lead two joint task forces concerning violent crimes, child exploitation, and human trafficking.

[4] On January 31, 2025, as part of a planned mass termination, widely described by media outlets as a "purge"[5][6][7] of federal law enforcement officials[8] under the second Trump administration, the FBI under Driscoll was ordered to fire eight senior executives and compile a list of potentially thousands of other employees involved in investigations stemming from the January 6 United States Capitol attack, closely linked to Donald Trump.

[13][15] Driscoll refused to endorse the effort to purge agents and pushed back "so forcefully that some FBI officials feared he would be dismissed.