Balls -
OK your right on that one, you caught out my dyslexia
Assuming that you did really know what your acronym meant and are simply being pedantic in an attempt at sophistication, I will rephrase my question.
"a BFR every 2 years" - How often would you expect a
BFR then?
In case you are in any doubt (sophistication - a deliberately invalid argument displaying ingenuity in reasoning in the hope of deceiving someone)