Dan Caldwell, once one of U.S. Defense Secretary Pete Hegseth’s most senior advisors, issued a joint statement on Saturday along with two other Pentagon officials casting doubt on an internal leak investigation that led to their ouster this week.
“We are incredibly disappointed by the manner in which our service at the Department of Defense ended,” Caldwell posted on X. “Unnamed Pentagon officials have slandered our character with baseless attacks on our way out the door.”
Caldwell and the others added: “We still have not been told what exactly we were investigated for, if there is still an active investigation, or if there was even a real investigation of ‘leaks’ to begin with.”
The comments were the first by Caldwell after an internal Pentagon leak investigation identified him for making “an unauthorized disclosure,” a U.S. official told Reuters.
After Caldwell, the Pentagon also ousted less senior officials Darin Selnick, who recently became Hegseth’s deputy chief of staff, and Colin Carroll, who was chief of staff to Deputy Defense Secretary Steve Feinberg.
The statement by Caldwell, Selnick and Carroll suggested they did not leak sensitive or classified information, saying: “We understand the importance of information security and worked every day to protect it.”
The Pentagon did not immediately respond to a request for comment.
Although Caldwell is not as well known as other senior Pentagon officials, he has played a critical role as an adviser to Hegseth.
His importance was underscored in a leaked text chain on Signal last month.
In it, Hegseth named Caldwell as the best staff point of contact for the National Security Council as it prepared for the launch of strikes against the Houthis in Yemen.
Caldwell had drawn attention in Washington for past views that critics have called isolationist, but which advocates said sought to right-size America’s defence priorities.
