Extra training depends on weather you do it week in week out with the SA Motorsport Fire and Rescue Organisation, WFW.. Like some of us do.. Or whether you are a first timer.. Have fire background.. etc etc..
You can tell those guys/gurls from the different fire suits, they say - MOTORSPORT FIRE AND RESCUE on the back...
There are clipsal training and fire extinguisher days which is compolsury for first timers on the V8 Track, there is inductions and saftey briefs each morning before each race day also...
And you are always under the direction of the Chief point/sector steward depending on where you are located.. (you can't just run out on the track willy-nilly...) - Just cause a car hits the wall, doesn't mean the one doing 200kmp/h behind it is going to stop cause you look like santa !
This is my fifth year as part of the Clipsal fire and rescue crew, and fifth year as a SA Motorsport Fire and Rescue member also... Attending numerous and various race meets throughout the year .. (including Sprintcars, drags, track days, mallala events.. list goes on) ! Its all good fun !
In answer to the quesitons..
For my curiosity:
I know that race flag marshals need to attend a certain amount of races beforew CAMS will allow them on track... - Answer - I believe there is like a ... probationary period as a learner or beginner to Flag Marshalling... But if they are new they will be under supervision .. Just like E4 fire and rescue members withought there full (un-supervised) license..
It is taken in turns during the day to 'un-suit' or sit a race out... get to cool down, have a seat, etc etc.. Except during the V8's when all members must be suited up and standing by...
And yea, lots of water is always consumed ... normally a pretty warm 4 days !!