180419-N-RI884-0288 PHILIPPINE SEA (April 19, 2018) An F-35B Lightning II with the "Green Knights" of Marine Fighter Attack Squadron (VMFA) 121 maneuvers on the flight deck of the amphibious assault ship USS Wasp (LHD 1) during a certification exercise (CERTEX). CERTEX is the final evaluation in a series of training exercises which ensures readiness for crisis response throughout the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Barker/Released)