U.S. Marine Maj. Joshua Nelson, an Mk4 "Sea King" pilot

U.S. Marine Maj. Joshua Nelson, an Mk4 "Sea King" pilot with 846 Naval Air Squadron, Commando Helicopter Force in the Royal Navy, checks his flight map during a routine flight to Forward Operating Base Juno, Afghanistan, Sept. 19. Nelson is participating in the Marine Corps Foreign Personnel Exchange Program with the Royal Navy, and will be active within their ranks for approximately three years. Originally a CH-46E "Sea Knight" pilot for the Corps, it took Nelson four months to learn to fly the Sea King.