NASA firefighters extract an astronaut from a space shuttle mockup during an emergency response exercise at the Kennedy Space Center in Florida. The rescuers' airtight suits and liquid oxygen breathing packs protect them from toxic fumes that likely would be present during a real shuttle crash landing. The March 16 land-rescue exercise was the first of its kind held in four years. Douglas J. Gillert NASA firefighters extract an astronaut from a space shuttle mockup during an emergency response exercise at the Kennedy Space Center in Florida. The rescuers' airtight suits and liquid oxygen breathing packs protect them from toxic fumes that likely would be present during a real shuttle crash landing. The March 16 land-rescue exercise was the first of its kind held in four years. Douglas J. Gillert SHARE: Download: Full Size (0.23 MB) Credit: VIRIN: 142229-D-NIM40-330.jpg Photo Gallery