 The storm has contaminated all of the underground springs, and they are desperately searching for fresh water.Gilligan stumbles upon a pair of airplanes that are hidden in the jungle that they failed to notice throughout their 15 years on the island.It is revealed that the island was a base of operations for the Army Air Corps during World War II, and the hangar was abandoned and heavily overgrown with jungle brush, and as such hidden from plain sight.