MONTEREY, Calif. (May 14, 2021) Retired U.S. Navy Adm. Thomas Fargo, right, offers feedback following U.S. Marine Corps Capt. Ben Cohen's presentation on the benefits and capabilities of hybrid airships during the Big Ideas Exchange. The annual event brings forward new thinking to address grand challenges in American national security. (U.S Navy photo by Mass Communication Specialist 2nd Class Natan K. Serpico)