(December 14, 2023, 1:54 PM EST) -- CINCINNATI — A firefighter has filed a petition in the Sixth Circuit U.S. Court of Appeals seeking rehearing en banc of a panel’s ruling that he failed to allege “any plausible pathway” by which per- and polyfluoroalkyl substances (PFAS) had gotten into his bloodstream, arguing that “undisputed evidence” shows that each defendant in the class action made PFAS and bears responsibility for contaminating his blood....