Brett Gilliam

  • Born: (Annapolis, Maryland, USA)

Bret Clifton Gilliam is an American author, entrepreneur, explorer and a pioneering technical diver. In 1994 he founded Technical Diving International (TDI) which is a technical diving certification agency that specializes in more advanced Scuba diving techniques, particularly diving with rebreathers and use of breathing gases such as trimix and heliox.


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