OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating (FSR) of B++ (Good) and the Long-Term Issuer Credit Rating (Long-Term ICR) of “bbb” of National Security Fire and Casualty Company (NSFC). In addition, A.M. Best has affirmed the FSRs of B+ (Good) and Long-Term ICRs of “bbb-” of NSFC’s wholly owned subsidiary, Omega One Insurance Company, Inc. (Omega), and the affiliated life/health insurer, National Security Insurance Company (NSIC). Concurrently, A.M. Best ha