The Cougars scored three unanswered goals in the second half Friday to rally from an early 2-0 deficit and beat the Mustangs in Eagle River.
Service's goals came from Tricia Stonebraker and Amanda Dotten, who each found the net twice. Chugiak had taken a 2-0 lead after Kelly Cobb scored twice in the opening 10 minutes. But Service got within 2-1 at halftime before going nuts in the final 40 minutes.