ATLANTIC OCEAN (May 18, 2015) Two F-35B Lightning II Joint Strike Fighters complete vertical landings aboard the amphibious assault ship USS Wasp (LHD 1) during the opening day of the first session of operational testing. As the future of Marine Corps aviation, the F-35B will eventually replace all aircraft from three legacy Marine Corps platforms; the AV-8B Harrier, the F/A-18 Hornet, and the EA-6B Prowler. The aircraft are stationed with Marine Fighter Attack Training Squadron 501, Marine Aircraft Group 31, 2nd Marine Aircraft Wing, Beaufort, South Carolina and Marine Fighter Attack Squadron 121, Marine Aircraft Group 13, 3rd Marine Aircraft Wing, Yuma, Arizona. (U.S. Marine Corps photo by Lance Cpl. Remington Hall)