This was a real treat for me when I decided to keep my curtain open because of the beautiful full moon that night as we approached St. Paul, MN. I don't know who set them off or why, but it was like the grand finale of the 4th of July fireworks right at the moment the train passed by. The next day I ask my train attendant if he had seen them, but he had not. He thought they were probably set off by a "foamer", a term I had never heard before, which he explained was someone who foams at the mouth when they see a train. Whoever did it, Thank You! A great start to a wonderful week at Glacier National Park.