 New details in the July 4th shooting at Yellowstone. 28-year-old Samson Fussner worked in a dining hall at Yellowstone National Park. He allegedly held a woman at gunpoint and told her he was going to commit a mass shooting on the 4th of July. On the morning of Independence Day, park rangers tried to find him. Eventually, they got into a shootout with him and he was shot and killed. The FBI is investigating. His motive for allegedly wanting to carry out a mass shooting is not clear. Alex Stone, EBC News.