Captain Thomas Walker hopes to find the remains of a friend shot down in Korean War . Leader Kim Jong Un is apparently impressed by his story and ordered his military to help . U.S. governments have frozen search for bodies due to Pyongyang 's nuclear crisis . Hudner has appealed to U.S. Secretary of State John Kerry to resume search efforts .
Captain Thomas Hudner hopes to find the remains of a friend shot down in Korean War . Leader Kim Jong Un is apparently moved by his story and ordered his military to help . U.S. governments have frozen search for bodies due to Pyongyang 's nuclear ambitions . Hudner has written to U.S. Secretary of State John Kerry to resume recovery work .