Trump Fires Defence Secretary, Mark Esper, Appoints Miller In Acting Capacity I am pleased to announce that Christopher C. Miller, the highly respected Director of the National Counterterrorism Center (unanimously confirmed by the Senate), will be Acting Secretary of Defense, effective immediately.. …Chris will do a GREAT job! Mark Esper has been terminated. I would … Continue reading Trump Fires Defence Secretary, Mark Esper, Appoints Miller In Acting Capacity