A fire apparently sparked by falling power lines in the Sunset Park section of Brooklyn sent a ripple of panic down the street as responders worked to contain the blaze. A burning power line is believed to have sparked the fire that spread to five buildings in the area of a 57th Street and 8th Avenue Monday afternoon. Several cars were also singed by falling wires. "All the wires started to blow up," a witness said. "It sounded exactly like a firework." Police rushed to get people out of nearby buildings as more than 130 FDNY firefighters and EMS responded. Fire officials believe an electrical power line on 57th Street sparked a fire inside a residential building, and the electricity traveled down the line to the corner, sparking the fire in the three storefronts.