Per Google
"Hangar 98" is likely a misunderstanding of the MYAG airport code for the former airstrip on Disney's
Castaway Cay, which was built by Frank Barber for drug smuggling before Disney bought the island. The island's history includes being a filming location for Splash and Pirates of the Caribbean, but "Hangar 98" is not the name of an official structure there.
MYAG is still an active runway per Flight Aware and I'll bet DISNEY uses it if needed.