180409-N-PO203-0077 NATIONAL HARBOR, Md. (April 9, 2018) Capt. Tom Teuschl, with the Office of Naval Research (ONR) reserve component, answers questions at the ONR exhibit during the Sea-Air-Space Exposition. The Navy League's Sea-Air-Space Exposition is the largest maritime exposition in the U.S. and brings together the U.S. defense industrial base, private-sector U.S. companies and key military decision makers. (U.S. Navy photo by John F. Williams/Released)