Caldwell was named in the “Signalgate” drama when Hegseth told the rest of the leaked group that he was the Pentagon’s best staff point of contact for the National Security Council as it prepared for strikes in Yemen.

A US Department of Defense watchdog has opened an investigation into its own Secretary of Defense, Pete Hegseth, over his use of instant-messaging app Signal to discuss government business.

A top advisor to U.S. Secretary of Defense Pete Hegseth reportedly was escorted out of the Pentagon after being identified in a leak investigation into an “unauthorized disclosure.” Reuters, which exclusively reported the development,