An Air Force Reserve pararescue jumper trained in emergency lifesaving checks the vital signs of Navy Dr. (Cmdr.) Laurel Clark during an exercise at the Kennedy Space Center in Florida. "These exercises are critical for getting people used to handling contingencies such as this," said Clark, an astronaut since 1996. The March 16 land-rescue exercise was the first of its kind held in four years. Douglas J. Gillert An Air Force Reserve pararescue jumper trained in emergency lifesaving checks the vital signs of Navy Dr. (Cmdr.) Laurel Clark during an exercise at the Kennedy Space Center in Florida. "These exercises are critical for getting people used to handling contingencies such as this," said Clark, an astronaut since 1996. The March 16 land-rescue exercise was the first of its kind held in four years. Douglas J. Gillert SHARE: Download: Full Size (0.28 MB) Credit: VIRIN: 599238-V-SOH31-571.jpg Photo Gallery