Two aides to Defense Secretary Pete Hegseth were placed on administrative leave on April 15 as part of an investigation into unauthorized leaks of information, according to two defense officials.

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.

Two top Pentagon advisers have been put on administrative leave in the first senior scalps to be taken over the Signal fiasco last month.