(February 10, 2022, 10:45 AM EST) -- PHILADELPHIA — Two chemical companies that make the firefighting agent known as aqueous film forming foam (AFFF) on Feb. 9 removed to Pennsylvania federal court a lawsuit brought by a municipality that is suing several manufacturers of AFFF contending that they are liable for damages because per- and polyfluoroalkyl substances (PFAS) in AFFF have polluted the local drinking water....