The aqueous film-forming foam, or AFFF, used in Marine Corps Logistics Base Albany Fire & Emergency Services’ trucks, until recently, had an unknown amount of per- and polyfluoroalkyl substances. This presented a possible health risk. Headquarters Marine Corps contracted out a company to drain out the old product and put in a new one. The fire trucks now have an AFFF containing less than 3% of the product. AFFF is mission-critical because it quickly extinguishes petroleum-based fires. (U.S. Marine Corps photo by Jennifer Parks)