Pratt & Whitney J52-P-408 axial-flow twin-spool turbojet variant documented as the powerplant of the Grumman EA-6B Prowler. Naval History and Heritage Command identifies two J52-P-408 engines for the electronic-warfare aircraft. The U.S. Navy officially retired the Prowler in 2015; the Marine Corps continued flying it through 2019, the final service year reflected here.