Mr Light wrote:
Also, how the hell did the US Army stumble across the Island in the first place? If they're just using it for a nuke test doesn't that suggest that it's just another typical Island at this point and not cloaked?
Not sure, but I'm leaning towards no. When John asked Richard how to leave the island, Richard indicated that it was privileged information. If it's still tough to leave I'm guessing it's still tough to get there.