OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has affirmed the financial strength rating of A+ (Superior) and the issuer credit ratings (ICR) of "aa-" of the life/health subsidiaries, Reliance Standard Life Insurance Company (Chicago, IL) and First Reliance Standard Life Insurance Company (New York, NY) (together referred to as Reliance Standard), as well as the property/casualty subsidiaries, Safety National Casualty Corporation, Safety Specialty Insurance Company (both domiciled in St. Louis, MO)