It's the only thing I can say of what I saw..
Saw a wing of three aircraft takeing off from NAS jax.
Triangle wing, shark-fin tail.
F18 sounding engines.
Color was blue-grey/white.
They didn't fly over head.. they were at a distance, couldn't see any intakes.. or anything else..

Others think F16's..
But they were too long for f16's..