The U.S. Air Force recently completed replacing replace legacy foam in fire vehicles and stockpiles across the service. Replacing the legacy AFFF (Aqueous Film Forming Foam) reduces the risk of mission-related contamination to drinking water sources. The new foam is perfluorooctanesulfonic acid (PFOS) free, only contains trace amounts of perfluorooctanoic acid (PFOA), and meets the military specifications for firefighting. The service also began retrofitting fire vehicles with an Eco-logic system earlier this year. The initiative should be finished by December, 2018. For information about the Air Force response to PFOS/PFOA, visit the U.S. Air Force Civil Engineer website.