I’ll have to take you at your word. But if you want to understand my skepticism, do the math. If your eye was able to resolve it as “a rock”, and it wasn’t flaming (not experiencing atmospheric friction), that sets a minimum distance and thus a minimum size for the object - a pretty LARGE size not to make the papers and set off air defense radars.
It was not illuminated. It was just a bit brighter than the night sky and it was LARGE and very FAST. If you weren't looking in that general direction at that specific moment you would never have seen it.
I am pretty sure that our government "KNEW" about it before hand and probably "KNEW" it would just skirt our planet so why cause any undue panic.