HARTFORD, Conn. (AP) — Tempers are flaring six days into an epic power outage that has roughly 300,000 Connecticut customers in the dark after a Northeast snowstorm.Residents have been lashing out at the state's largest utility for taking so long to restore electricity after snow-laden branches brought down wires across the region last weekend. Connecticut Light & Power urges angry customers to stop threatening and harassing repair crews.National Guard troops deployed to clear debris are providing security outside a utility office building in Simsbury, a hard-hit Hartford suburb.At a shelter at Simsbury High School, Stacy Niezabitowski (nee-zah-biht-OW'-skee) said Friday she would love to yell at someone from Connecticut Light & Power but hasn't seen any of its workers.The utility promises to restore power to 99 percent of its 1.2 million customers by Sunday night.