191216-N-ZA795-1004 ATLANTIC OCEAN (Dec. 16, 2019) Damage Controlmen attached to the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7) collect Aqueous Film Forming Foam (AFFF) samples 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)