Esper Remarks Defense Secretary Dr. Mark T. Esper discusses the implementation of the National Defense Strategy during a speech at the RAND Corporation in Santa Monica, Calif., Sept. 16, 2020. SHARE: Download: Full Size (1.15 MB) Tags: National Defense Strategy, Defense Secretary, Esper Credit: Lisa Ferdinando, DOD VIRIN: 200916-D-BN624-0206.JPG Photo Gallery