180418-N-KK935-0398 PHILIPPINE SEA (April 18, 2018) An F-35B Lightning II assigned to Marine Fighter Attack Squadron (VFMA) 121 takes off from the amphibious assault ship USS Wasp (LHD 1) following an expeditionary strike exercise as part of 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 Jessica Bidwell/Released)