JUST IN: Pentagon Chief of Staff has resigned. "After two years in the Pentagon, I've decided the time is right to return to the private sector. It has been an honor to serve again alongside the men and women of the Department of Defense," said Rear Adm Kevin Sweeney, USN (Ret.)

JUST IN: Pentagon Chief of Staff has resigned. "After two years in the Pentagon, I've decided the time is right to return to the private sector. It has been an honor to serve again alongside the men and women of the Department of Defense," said Rear Adm Kevin Sweeney, USN (Ret.)

— HansNichols (@HansNichols) January 5, 2019