It has nothing to do with training or career/vollie status. It has to do with your guys being at the station. If you maintain a duty crew -- even if you are a 100% volunteer department -- those guys at the station count 1-for-1. Volunteers responding from elsewhere count 3-for-1. And if you don't keep proper records, they're only worth 6-for-1 credit.
Originally posted by BC79er
I forget the exact ratio, but supposedly a volunteer only counts as a fraction of a career firefighter. Even if a firefighter is a career FF somewhere else or has career-equivalent certs (IFSAC), if they are operating in a volunteer capacity with the department being graded, they don't count as 1.