Remember the final scene in the original Jurassic Park, when they've escaped the dinosaurs and fly off in their helicopter? I bet they are EXHAUSTED. This is the helicopter sound that they're all going to fall asleep to (minus the John Williams soundtrack). Skimming over the ocean and flying into the sunset, it's not a half bad way to get to sleep, assuming that you weren't recently mauled by genetically engineered velociraptors. Those guys give me insomnia.