 OLDWICK, N.J.--BUSINESS WIRE--AM Best has revised the outlooks to negative from stable and 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. AM Best also has revised the outlooks to negative from stable and affirmed the FSR of B Good and the Long-Term ICR of bbb of NSFCs affiliated lifehealth insurer, National Security Insurance Company NSIC. In addition, A 