Winter is coming to Alaska, and it's bringing an avalanche of challenges to the men and women who help keep Ted Stevens International Airport (ANC) running. Wildlife management teams find innovative ways to keep the area's creatures and planes from running into each other, while airfield maintenance crews fire up their multi-million-dollar machines to keep the runways clear. A race to replace 6-ton cargo jet engine, a medical emergency landing, and the hunt for a gunman in the terminal add to the drama as the season's first snow storm arrives.