Marc Singer says he didn't start off trying to make a movie, much less one that would win three major awards at the Sundance Film Festival this year. He says he was just looking out his New York apartments window, shortly after he arrived from England, and became fascinated with the street people he saw living around him. He went out of his way to meet some of them, and soon found himself in the dank, rat-infested railway tunnels under the city, among the hundreds of people who call the tunnels home. Singer is in Minneapolis today for a screening of "Dark Days" which tells their stories. He told Minnesota Public Radio's Euan Kerr he and his new friends had been looking for ways to get people out of the tunnel.