Physical Training Defense Secretary Dr. Mark T. Esper participates in a physical training session with service members and civilians at Camp Resolute Support in Kabul, Afghanistan, Oct. 21, 2019. SHARE IMAGE: Download Image: Full Size (8.49 MB) Tags: Defense Secretary , Esper Photo By: Army Staff Sgt. Nicole Mejia, DOD VIRIN: 191020-D-AP390-3038.JPG Photo Gallery