Washington: (Right Now News) The U.S. Department of Defense has announced that Navy Secretary John C. Fallon has resigned. According to Pentagon spokesperson Sean Parnell, his resignation is effective immediately.

The spokesperson thanked John Fallon for his services and expressed best wishes for his future. He also stated that Under Secretary of the Navy Hung Cao will now assume the role of Acting Secretary.

This change is part of recent shifts in the top leadership of the Department of Defense. U.S. media reports indicate that Fallon’s resignation was sudden, and no official reason has been provided.

This move signifies significant changes in Navy leadership, which could impact the administration.

It is noteworthy that John Fallon became the 79th Navy Secretary in March 2025, while Hung Cao has served as the Under Secretary of the Navy.