NATIONAL HARBOR, Md. (August 4, 2021) Acting Secretary of the Navy the Honorable Thomas W. Harker makes an opening statement during the Sea-Air-Space 2021 Exposition. The Sea-Air-Space Exposition is an annual event that brings together key military decision makers, the U.S. defense industrial base and private-sector U.S. companies for an innovative and educational maritime based event. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kyleigh Williams/Released)