Coast Guard Petty Officer 1st Class Huynh Nguyen, a marine science technician, explains to a deckhand the procedures for proper disposal of hazardous material in Freeport, Texas, Sept. 3, 2017. Coast Guard pollution assessment teams inspected vessels and facilities to determine if pollution exists and to ensure proper clean up during the Hurricane Harvey response. (U.S. Coast Guard photo by Petty Officer 2nd Class Paul Dragin)