There’s no telling why aliens decided to descend on the community outside Stockton, Calif. on Feb. 18, 1947—and no telling, truth be told, that they actually did. But Leland Sammers, a farmer who lived 14 miles west of Stockton, is certain he had visitors. “I was standing near my hog pen about 100 ft. east of my house, when I heard the pheasants raising a disturbance and the chickens all rushed into the chicken house,” he said in a statement he filed with the government shortly after. “I looked toward the house to see what was causing it and saw something hovering just above the house.…