An UH-1 “Huey” helicopter equipped with an Office of Naval Research-sponsored Autonomous Aerial Cargo Utility System kit makes an approach for landing during final testing at Marine Corps Base Quantico, Va., Dec. 12, 2017. The AACUS program is developing an innovative capability that enables autonomous flight, obstacle avoidance, approaches, landings and takeoffs in any existing rotary-wing aircraft. Navy photo by John F. Williams