One report of an eye witness now claims the F-35 was flying upside down (inverted) prior to impacting the ground.

In years past we had a post here on Moparts about whether the F-35 would stay “stealthy” to enemy radar for long if minature radar antennas in the noses of missiles could be redesigned successfully to use long wavelength, low frequency, radio transmissions.
One way to do this is to use “Fractal” shaped antennas.

A similar problem is faced by submarines, who must now hide from newly invented sensors in overhead satellites, or in “sea gliders” that can roam the deep oceans by up and down glides triggered by buoyancy of internal gas bladders.