Accidents -- Aerial operations, Soviet 1 Airplanes, Military -- 1 Arctic regions 1 Fiction 1 Fiction. -- 1 Foreign relations -- 1 more ... Industrial hygience -- 1 Industrial safety -- 1 Prevention 1 Russia (Federation) -- 1 Smith, Jon (Fictitious character) -- 1 United States -- 1 World War, 1939-1945 -- 1 less ...