Small plane crashes on sightseeing tour in mountainous area of Alaska . - July 20 : A small plane carrying a group of tourists from the United States to Canada crashed into trees near Mount Redoubt National Park in Alaska. Cruise line cancels future tours with company that operated plane .
Small plane crashes on sightseeing tour in mountainous area of Alaska . Four cruise ship passengers and plane 's pilot killed . Cruise line cancels future tours with company that operated plane .