A search operation is underway in Nashua, N.H., for a teenager who is believed to have fallen into a storm drain during a torrential downpour on Friday night. Jacob Goulet, 16, was reported missing on Saturday. He was last seen on Friday night when he was walking home from a friend’s house. A witness who reported the incident found various personal items believed to be owned by Goulet that were in the area of a storm drain. Some storm drain covers came off as the town was under a flash flood warning.