Esper Remarks Defense Secretary Dr. Mark T. Esper speaks to sailors in an all-hands call on the aircraft carrier USS Carl Vinson, underway in the Pacific Ocean, Sept. 17, 2020. SHARE: Download: Full Size (2.75 MB) Tags: Navy, Defense Secretary, Esper Credit: Lisa Ferdinando, DOD VIRIN: 200917-D-BN624-0462.JPG Photo Gallery