I was more curious at the clarity of the underwater image and the intensity of the light.
40 years ago, the U.S. Navy carried out a daring mission to retrieve a top-secret film capsule that had settled more than 16,000 feet (4,876 meters) underwater on the ocean floor. At the time, the expedition was the deepest undersea salvage operation ever attempted.
Documents released publicly by the Central Intelligence Agency on Aug. 8 detail the capsule’s incredible recovery, using what was at the time the Navy’s most sophisticated deep-sea submersible.
On July 10, 1971, a classified U.S. satellite, code-named Hexagon, attempted to return a mysterious “data package” to Earth by ejecting a capsule over the Pacific Ocean. The capsule’s parachute failed, and the canister slammed into the water with an excruciating 2,600 Gs of force.