John Davis, a 92-year-old volunteer pilot for Pilots N Paws, wants his pilot's license back to rescue abused animals. Davis and his co-pilot, Michele McGuire, have traveled to about 100 airfields and saved more than 600 dogs —many of them abandoned or abused. But Davis' hope of piloting future flights - even with a co-pilot -- took a nosedive in July. The FAA denied his medical certification application, saying he fell short of medical standards following an October aviation medical examiner exa