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"): He assumed his post as CDRUSNORTHCOM and commander of NORAD on December 5, 2014, and was succeeded by USAF General Lori Robinson on May 13, 2016.
Relevant evidence: Yes