Wake is built on coral on an ancient volcano rim, so it's going to be pretty sturdy. It's not like a barrier island sand bar.
I can't speak for anything on the island. I've never been there.
But if there was a 20 ft storm surge capped with 40 foot waves crashing across an island with a high elevation of 18 feet, I'm guessing nothing vertical survived.
There may be a few vehicles in the lagoon, but I'm very doubtful any are left on the island.
how soon do you think we will know if Wake Is. is still there?