Elliott's desire to build a deep warm-water pool is not new. He'd been working with the Veterans Administration to build a 44-foot pool after the VA had "mothballed its own" warm water pool decades earlier, he said. But in 2010, about the same time he and the VA were making presentations in Washington, D.C., to fund this project, he said, new research showed that in order to "get that serotonin fix" you had to go at least 66 feet. And to do any technical diving, which leads to more commercial opportunities, you have to go beyond 130 feet.