Foam Test Naval Research Lab Chemical Engineer Katherine Hinnant prepares to test an experimental aqueous film-forming foam at the NRL in Washington, Sept. 23, 2019. NRL scientists are conducting research to support the Defense Department’s effort to replace firefighting foams containing fluorine. SHARE: Download: Full Size (1.72 MB) Tags: Navy Credit: Navy Petty Officer 3rd Class Manuel Najera, DOD VIRIN: 190923-D-KT024-0131C.JPG Photo Gallery