Esper Tour Defense Secretary Dr. Mark T. Esper tours the U.S Army Medical Research Institute of Infectious Diseases with Army Brig. Gen. Mike Talley, commanding general of the Army Medical Research Development Command, during his visit to Fort Detrick, Md., March 17, 2020. SHARE IMAGE: Download Image: Full Size (1.03 MB) Tags: Army Photo By: Army Staff Sgt. Nicole Mejia, DOD VIRIN: 200317-D-AP390-1012C.JPG Photo Gallery