U.S. Defense Secretary Pete Hegseth's key advisor, Dan Caldwell, was escorted from the Pentagon on Tuesday and placed on administrative leave over an “unauthorized disclosure,” according to CNBC. Dan Caldwell was placed on administrative leave for an unauthorized disclosure, according to an unnamed official, marking the first public report of the decision. Though less publicly known, Caldwell has been a key adviser to Hegseth and played a crucial behind-the-scenes role. A leaked Signal text revealed Hegseth identified him as the top staff contact for NSC planning on Yemen strikes.