NEEMO 6 commander John Herrington (left) and biomedical engineer TaraRuttley work with the cave reel line during a training session underwater.Herrington is leading the crew in an undersea mission that is field-testingequipment and technology for the International Space Station (ISS) as partof the NASA Extreme Environment Mission Operations (NEEMO) project. CREDIT:NASA/JSC. Click to enlarge.
