Fireman Nicolas Sorrell uses a torch to heat a copper pipe Fireman Nicolas Sorrell uses a torch to heat a copper pipe in the hull technician workshop of the amphibious dock landing ship USS Tortuga (LSD 46) on Sept. 7, 2012. Tortuga is part of a forward-deployed amphibious ready group and is operating in the U.S. 7th Fleet area of operations. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 020993-D-NPB68-459.jpg Photo Gallery