No reason was given for the unexpected departure of the Navy’s top civilian official.
Phelan’s departure is the latest in a series of shakeups of top leadership at the Pentagon, coming just weeks after Defense Secretary Pete Hegseth fired the Army’s top uniformed officer, Gen. Randy George. Hegseth also has fired several other top generals, admirals and defense leaders since taking office last year.
The firings began in February 2025, when Hegseth removed military leaders, including Adm. Lisa Franchetti, the Navy’s top uniformed officer, and Gen. Jim Slife, the No. 2 leader at the Air Force. Trump also fired Gen. Charles "CQ" Brown Jr. as chairman of the Joint Chiefs of Staff.
Undersecretary Hung Cao, a 25-year Navy combat veteran, will take over as acting head of the Navy.
