Player Embed Code: Download Embed Share Top DOD Health Leaders Speak at Sea-Air-Space Exposition Defense.gov Aug. 4, 2021 | 59:12 Rear Adm. Dana Thomas, the Coast Guard's director of health, safety and work-life; Rear Adm. Bruce Gillingham, Navy surgeon general; and Army Lt. Gen. Ronald J. Place, Defense Health Agency director, speak about the COVID-19 response and post-pandemic national security at the Sea-Air-Space Global Maritime Exposition in National Harbor, Maryland.