JOINT BASE ELMENDORF-RICHARDSON, ALASKA — It's a sacred annual mission: a group of mortuary affairs recovery experts arrives each June at a glacier high in Alaska's Chugach mountain range to continue the hunt for the remains of 52 troops killed in an Air Force transport crash 66 years ago. The C-124 was carrying 42 airmen, eight soldiers, one sailor and one Marine when it crashed into Mount Gannett on Nov. 22, 1952 as it traveled from McChord Air Force Base, Washington to what is now Joint Base Elmendorf-Richardson, Alaska. Winter had descended on the treacherous mountain range, and no remains...