National Geographic - Inside: Delta Drivers S01E01: Diver Down (2010)

In this first episode we follow three dive teams taking on some of the largest challenges the Gulf of Mexico has to offer. The Southern Hercules dive barge is 125 miles out to sea off the coast of Louisiana.
On board are some of the top divers working in the Gulf of Mexico. The mission: to disassemble and plug an aging subsea oil well as deep as these divers are allowed to go: nearly 300 feet below the surface of the water. The danger increases exponentially along with the depth. The only thing is, they don’t know the condition of the well. Since Hurricane Rita, no one has seen it. During the first phase of diving Supervisor Brian Derby hear the words no dive supervisor wants to hear from his diver down below ‚ “Check my air”: his diver suddenly has nothing to breathe…

25 miles to the south on the DB1 barge we meet Supervisor Reg Drye and his team of divers as they disassemble a hurricane-toppled oil rig. Reg leads his team through the dangerous job of underwater “burning”, cutting through steel with a torch. But one miscalculation can cause an explosion with lethal results. 85 miles to the west aboard the Arapaho, two newbie’s arrive in the middle of an exhausting 28-hour dive rotation. It takes teamwork to keep a diver safe as they burn through the legs of a huge platform. The pressure is on supervisor Scott Noakes to get these Newbie’s up to speed before they make a mistake that could kill somebody.