190404-N-RI884-0343 SOUTH CHINA SEA (April 4, 2019) F-35B Lightning II aircraft assigned to Marine Fighter Attack Squadron (VMFA) 121 are secured to the flight deck of the amphibious assault ship USS Wasp (LHD 1) during a replenishment-at-sea during Exercise Balikatan 2019. Exercise Balikatan, in its 35th iteration, is an annual U.S., Philippine military training exercise focused on a variety of missions, including humanitarian assistance and disaster relief, counter-terrorism, and other combined military operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Barker/Released)