Business The highest-ranking female official at the Pentagon is used to being the only woman in the room Published 3 years ago on 12 November 2021 By Terry Power Deputy secretary of defense Kathleen Hicks is on a mission to help the military go green. Read More Related Topics:Claire Zillmandeputy secretarydodEmma Hinchliffefemalefemale secretary of defenseFortune Most Powerful Womengreen technology militaryhighest ranking woman pentagonhighestrankingkathleen hicksKristen BellstromMost Powerful WomenOfficialpentagonRoomsecretary of defenseThe Broad SheetThe BroadsheetWoman