When making Hollywood movies and special effects, we use plastic trash bags, one inside the other, several laminations, in effect, to make the "casing" into which we put fuel. That only takes a gallon or two in two or three locates around a car, so that when ignited, the effect is spectacular.
In combat, striking a row of vehicles and their fuel tanks, from a distant perspective, gives the impression of a NAPALM strike.
Could we be using it to clean up or neutralize possible chem/bio sites?