away for help. now, sailor s story is amazing. authorities do not know how they survived the initial crash, let alone the walk, but it s not the first time something like this has happened. dan simon has the story of another sole survivor. i remember feeling angry and survivor s guilt. why didn t my brother survive? why didn t anybody you know why me? reporter: if there s anyone who can relate to what 7-year-old sailor gutzler is going through as the lone survivor of a plane crash, it s this woman. good evening. more than 140 people died at detroit s metro airport tonight. a light dc-9 crashed shortly after takeoff. reporter: cecilia sheehan was 4 years old when she survived the crash of northwest flight 255. the phoenix-bound plane went down on august 16th, 1987 moments after taking off from detroit. saw a chair thats wlag upside down and we picked up the chair and underneath it was little