(December 15, 2022, 11:28 AM EST) -- CHARLESTON, S.C. — The Plaintiffs Executive Committee (PEC) in the multidistrict litigation for injuries allegedly caused by the firefighting agent known as aqueous film forming foam (AFFF) on Dec. 14 filed a letter brief in South Carolina federal court contending that the personal injury bellwether pool should be drawn solely from individuals exposed to drinking water at a military facility in Pennsylvania where substantial discovery has already been completed for two of the relevant water providers....