PORTLAND, Maine — A 51-year-old farmer from rural Maine wept in court and expressed remorse Friday as he was sentenced to 10 years in prison for fatally shooting a friend in the head during a drug-fueled party in a "sex dungeon" of a suburban home. Bruce Davidson apologized for causing the death of Fred Wilson, a 50-year-old computer technician who was killed when Davidson shot him with a .44-caliber revolver during a night of sexual play at Wilson's home in South Portland.