191216-N-ZA795-1005 ATLANTIC OCEAN (Dec. 16, 2019) Damage Controlman 2nd Class Ryan Cummings collects Aqueous Film Forming Foam (AFFF) samples aboard the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7) as part of the flight deck’s AFFF system check, Dec. 16, 2019. Iwo Jima is underway conducting sea trials in the Atlantic Ocean. (U.S. Navy photo by Mass Communication Specialist 1st Class Pedro A. Rodriguez/Released)