The cast and crew of Stargate Continuum were most excited about the fact that the new Stargate DVD was filmed in the Arctic. Not only did they film freezing temperatures, but the Navy also loaned the crew an actual submarine. Director Martin Wood called it a "billion dollar prop," at Con. In an exclusive clip from the Continuum DVD, we find out how our favorite Stargate characters ended up on top of the world. Having an actual Navy submarine crash through the ice in the arctic is pretty spectacular. Wood explained that he couldn't believe how amazing the Navy was being with the Stargate crew. The DVD will be out tomorrow, July 29.