191219-M-IM909-298 OKINAWA, Japan (Dec. 19, 2019) Lance Cpl. Nathanial Durost operates the F-35 cockpit demonstrator at Marine Corps Air Station Futenma, Okinawa, Japan, Dec. 19, 2019. The F-35 cockpit demonstrator is used to educate Marines about the Joint Strike Fighter's projected capabilities. (U.S. Marine Corps photo by Lance Cpl. Ryan Persinger/Released)