The sounds of summer… children splashing in the pool, a gentle breeze in the trees, a drenching thunderstorm… and the roar of a motorcycle. Many people cannot understand the appeal of straddling a roaring engine that rattles windows blocks away. Their complaints have inspired law enforcement officers to crack down on loud motorcycles. But for some Granite Staters, revving up the Harley is essential part of the season. New Hampshire Public Radio's Raquel Maria Dillon has more.