Mary F. O'Brien

Mary F. O'Brien is a retired United States Air Force lieutenant general who served as the director for command, control, communications, and computers/cyber and chief information officer of the Joint Staff from 2022 to 2023. She previously served as the Deputy Chief of Staff for Intelligence, Surveillance, Reconnaissance and Cyber Effects Operations from 2019 to 2022. Prior to serving in that position, O'Brien commanded the Twenty-Fifth Air Force. In April 2022, O'Brien was nominated for appointment as director of command, control, communications, and computers/cyber and chief information officer of the Joint Staff.

Effective dates of promotions + Rank Date Second LieutenantMay 31, 1989 First LieutenantMay 31, 1991 CaptainMay 31, 1993 MajorJuly 1, 1999 Lieutenant ColonelMarch 1, 2002 ColonelAugust 1, 2007 Brigadier GeneralMay 2, 2014 Major GeneralAugust 2, 2017 Lieutenant GeneralNovember 8, 2019