Dr. Mark T. Esper Army Secretary Dr. Mark T. Esper answers questions from members of the Senate Armed Services Committee during the confirmation hearing on his nomination to serve as secretary of defense, July 16, 2019. SHARE IMAGE: Download Image: Full Size (1.04 MB) Tags: Esper Photo By: Army Sgt. Amber I. Smith, DOD VIRIN: 190716-D-SV709-0481C.JPG Photo Gallery