Dynamic Risk Assessment is commonly used to describe a process of risk assessment being carried out in a changing or evolving environment, where what is being assessed is developing as the process itself is being undertaken. This is further problematical for the Incident Commander when confronted with competing or conflicting incident priorities, demands or distractions before a complete appreciation of all mission critical or essential information and data has been obtained. The dynamic management of risk is all about effective, informed and decisive decision making during all phases of an incident.
Art you really hit the nail on the head. MY SA quality is DIRECTLY connected to my ability to obtain good information from my interior companies and my Safety Officer and visa versa. I have often modified my IAP based not on what I see but what I am hearing over the radio from my attack companies. I have also redirected interior attacks based on what I see outside that they can not. Communication is the key.
As for your belief that the loss of older more seasoned personnel is effecting the fire service. It is well founded. My department is wondering the same thing. We have instituted "Mentering" and welcome back retired members to assist in training when possable but more often as of late when they leave the service its with a bitter taste in their mouth. Face it. We in the fire service have went from heros to zeros in 10 short years. The very same politicians that could not get enough of us in 2001 want to rip our pensions from us, replace us with bargan basement workers and make replacement of tired emergency vehicles a joke in 2012. Add to that the growth of light weight building construction and we face serious problems for the future. Were loosing well trained "Traditional Construction Fire" firefighters and facing a real shift in tactics for future firefighting.