Defense Secretary Pete Hegseth on Friday reportedly fired Navy chief of staff Jon Harrison, who helped pull off the reshuffle of the service’s bureaucracy.

The Pentagon did not state why Harrison was fired, but it comes after the Trump administration warned of major trimming of the federal government amid the shutdown, and the same week the Senate confirmed Navy Undersecretary Hung Cao. 

“Jon Harrison will no longer serve as Chief of Staff to the Secretary of the Navy," the Pentagon told Politico. "We are grateful for his service to the Department." 

Harrison has not commented on his departure so far, but his exit is the latest high-profile shake-up at the Pentagon under Hegseth. President Donald Trump also removed former chairman of the Joint Chiefs, Charles Q. Brown, earlier this year, and the military leaders of the Navy, Air Force and Coast Guard.

Harrison previously worked on the United States Arctic Research Commission during Trump's first term. 

His reported firing comes just days before the Navy's 250th birthday celebration, which is scheduled for Sunday. Trump, Hegseth and Navy Secretary John Phelan are expected to attend.

Misty Severi is a news reporter for Just The News. You can follow her on X for more coverage.