Decompression Chamber Use...
I was watching the Silent World movie recently and there's a scene where one of the crew came up too fast after catching lobsters. Falco saw him behaving goofy due to Nitrogen Narcosis and signaled him to swim to the surface. He didn't stop to decompress and started showing symptoms of the bends. In the film, they broke out a small, one man, decompression chamber... Laid it on the deck in the bright sun. The diver slid inside and they pressurized him, then gradually brought him back to sea level pressure. In the film, everyone is casual and even kidding around as they leave him out there in the sun and go inside to eat their lobsters. If it was me, I'd have had a lot of trouble with claustrophobia not to mention baking in the sun. I figure this was a staged scene for the film. But still, they seem pretty casual about having to treat a diver for the bends.
Contrast that movie with the disaster scene of Shadow Divers when the father and son show up on the surface out of air, no deco, and already dying. They call the coast guard, administer aspirin and oxygen, CPR, etc. But they have no decompression chamber. Why not? Especially when all of the dives were about 230 feet deep and every dive required stage decompression. Why wouldn't they bring a portable decompression chamber? In the reading I have done on wreck divers and cave divers, it seems like they all get the bends sooner or later.
I then I remember a Sea Hunt episode where they had to decompress and used the escape chamber in a submarine to pressurize Mike and another guy. And another episode where they used a pressure suit to decompress. And another time just went back down in the water to decompress.
I looked up "Portable Decompression Chamber" and only found low pressure "Oxygen Therapy" units or "hyperbaric Stretcher" units. It seems to me that a serious portable decompression chamber for divers wouldn't be all that expensive... Why aren't they used?