According to the article by Pat Rizzuto and Andrew Wallender:
Bloomberg Law – Pentagon Shift to PFAS-Free Foam Spurring ‘Tidal Wave’ of Change
“Industry recognizes a need to transition to a fluorine-free foam,” said Justin Barkowski, vice president with the American Association of Airport Executives. The question is, “how do we get from Point A to Point B?”
The Pentagon has reviewed alternatives from AFFF manufacturers National Foam, Angus Fire, and Perimeter Solutions which now make PFAS-free foams certified to meet International Civil Aviation Organization standards—and GreenFire®, which was founded in 2016 to produce products free of carcinogenic ingredients including PFAS.