NASA has found that a harder surface produces less damage as it allows the airplane to skid to a stop compared with a softer surface, which produces a more abrupt stop. "So all that force is absorbed by the airframe and the occupants," said Chad Stimson, NASA's Langley Emergency Locator Transmitter Survivability and Reliability project manager after the July 29 crash test. "No one would have walked away from this. They might be alive, but they'd need help right away. In that sense, it's the perfect search and rescue case."