For many people when you say technical diving it brings about thoughts of deep and cold wrecks that sit at the bottom of the ocean outside of the depth limits of most divers. The reality is that although this is a portion of technical diving being trained in technical diving presents a lot of options that are not normally available to recreational divers.
This video was filmed over the course of a 100 minute dive on a dive site with an average depth of 40′. With out the use of a double tank configuration a dive like this would never have been possible.