differentiate the high velocity objects from the low. However, this is besides the point. The problem is how in hell Taiwan can tag those powder to the surface of high flying plane and how much it requires to cover to entire coast of Taiwan and for how long?  why it will work on the j-20 but not f-22? My conclusion can only be that this guy just pull this out of his ass and just assume everyone is going to buy into his bull. In Taiwan, he may succeed because there are really a lot brain dead idiots in that place. To fool the mainlander? fat chance.