The Associated Press 19/07/2024 There’s a home movie theater with orange walls and plush recliners at the top of a steep hill on Matthew Rantanen’s ranch in Southern California. But on a recent afternoon, people weren’t flocking to the room to watch a movie or to escape the scorching heat, they were shining a beam of light through more than 55,000 feet (17 kilometers) of fiber optic cable coiled up in the corner. The demonstration took place during a hands-on broadband training for tribal nations near rural Aguanga, about 53 miles (85 kilometers) north of San Diego. Participants handled fiber made up of strands of glass as thin as human hair that transmit energy through pulses of light. The session was part of an initiative founded in 2021 by Rantanen…