Greeting Team Captains Defense Secretary Dr. Mark T. Esper shakes hands with Air Force football team captains before the start of the Navy-Air Force game, Annapolis, Md., Oct. 5, 2019. SHARE: Download: Full Size (0.93 MB) Tags: Air Force, Navy, Defense Secretary, Football, Esper Credit: Lisa Ferdinando, DOD VIRIN: 191005-D-BN624-0421.JPG Photo Gallery