OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has revised the outlooks to positive from stable and affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Ratings of “a-” of Union Mutual Fire Insurance Company (Union Mutual Fire), the lead property/casualty company and its wholly owned subsidiary, New England Guaranty Insurance Company, Inc. (New England Guaranty), as well as its mutual affiliate, Community Mutual Insurance Company (Community Mutual), which are coll