Looks like it is in one of those lakes. But how do we have no clue of the flight path. The other plane didn't notice it?

No one saw it splash down? And we don't yet know why the pilot ejected?

https://www.detroitnews.com/story/news/nation/2023/09/18/a-stealth-f-35-fighter-jet-went-down-in-s-c-its-proving-hard-to-find/70889673007/