1. Carefully dunk a flying helicopter in the sea without destroying the engine. It is only necessary that the landing gear touch the water; the chopper's crew do not have to be submerged.
2. Ascend so that the chopper is no longer near water.
3. The same visual effect as is seen when the player is underwater without SCUBA gear is applied, and continues to worsen even after the chopper is out of the water.