180419-N-BD308-0050 PHILIPPINE SEA (April 19, 2018) An F-35B Lightning II assigned to the "Green Knights" of Marine Fighter Attack Squadron (VMFA) 121 launches from the amphibious assault ship USS Wasp (LHD 1) following a tactical recovery of aircraft and personnel 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 3rd Class Levingston Lewis/Released)