170403-N-PO203-119 NATIONAL HARBOR, Md. (April 3, 2017) Lt. Cmdr. Kathleen Gilpin, left, and George Letscher, right, both with the Naval Research Laboratory (NRL), talk to Sailors about research into better understanding traumatic brain injury during the 2017 Sea-Air-Space Exposition. The Office of Naval Research (ONR) and NRL will be discussing breakthrough naval technologies and potential research opportunities during the three-day exposition hosted by the Navy League of the United States with the goal of bringing together leaders from defense organizations, both government and private industry, to learn about and view the most up-to-date information and technology related to maritime policy. (U.S. Navy photo by John F. Williams/Released)