Question: The first female officer to command a major Unified Combatant Command in the United States Armed Forces succeeded a Navy admiral who served as the 23rd commander of what?
Sentence (from "William E. Gortney"): William Evans "Bill" Gortney (born September 25, 1955) is a retired United States Navy admiral who most recently served as the sixth commander of U.S. Northern Command and the 23rd commander of North American Aerospace Defense Command (NORAD).
Relevant evidence: Yes