Mealey's (March 8, 2023, 1:31 PM EST) -- CINCINNATI — A firefighter who contends that he and others have been injured by exposure to the firefighting agent known as aqueous film forming foam (AFFF) filed a brief in the Sixth Circuit U.S. Court of Appeals arguing that “there is nothing unusual” about a federal trial court’s decision to grant class certification, despite the defendants’ argument that the class is “novel and sprawling.”...