His exit comes a month after he fired off a memo announcing an investigation into “unauthorized disclosures of sensitive and classified information across the Department of Defense.”

Joe Kasper, Hegseth’s chief of staff, is the fourth top official to be ousted in the last week amid turmoil at the Pentagon.

Joe Kasper, who had been at the center of Pentagon chaos over the past week, had been expected to take on another role at the agency.