NAVAL AIR STATION KEY WEST, Fla. (April 26, 2022) U.S. Navy Rear Adm. Douglas Sasse, Reserve Vice Commander, U.S. 4th Fleet, left, tests future operating concepts with a scientist from Naval Information Warfare Center Atlantic during a fleet experimentation period with various research and development agencies and U.S. Naval Forces Southern Command/U.S. 4th Fleet. The fleet experimentation serves to demonstrate Navy/Marine Corps integration by testing concepts that would be employed during expeditionary advance base operations, evaluating expeditionary systems for force protection and coordinated electronic warfare. (U.S. Marine Corps photo by Cpl. Brendan Mullin)