The U.S.S. has been hit by another fire. The small fire was reported about 7 p.m. Saturday in the dry dock at the Portsmouth Naval Shipyard. The shipyard is investigating what caused the fire. The Los Angeles Class nuclear-powered submarine was hit by a fire that caused $400 million dollars on May 23rd. It is believed that the first fire was started when a vacuum cleaner ingested a heat source that ignited debris inside the vacuum. No word on what caused the latest fire.