( May 29, 2025, 8:47 AM EDT) -- ATLANTA — The 3M Co. has filed a brief in the 11th Circuit U.S. Court of Appeals arguing that a district court erred when it remanded to state court a case brought by a town in Alabama that has sued 3M for groundwater contamination allegedly from per- and polyfluoroalkyl substances (PFAS) in the firefighting agent known as aqueous film forming foam (AFFF). The company contends that it plausibly alleges that at least some of the alleged contamination resulted from AFFF that was produced for the U.S. military pursuant to rigorous military specifications and, therefore, federal jurisdiction applies....