I take it an impact strike team is a fast moving strike team cascaded in?
My understanding was that an 'Impact' Strike Team is usually designed to be initial 'quick' response into adjacent groups, whereas the 'Campagain' Strike Teams are for a longer deployment time, with a longer mobilisation time, to nearly any point in the state. Different setups for each type allowed different configurations of vehicles to be taken offline for S/T duties. Eg: Your group might be fine to be tanker-less for 12 hrs(Impact), but not 3 days(Campagain).
The Cascading idea was slowly introduced over the years to stop stupidity, such as brigades turning out for 25mins to form up at the group base, then responding back past their own station on route to the fire, and hour later. This seems to be the case in the Adelaide Hills at least.
pfft, you mean: "Mop up" Strike team.
Really the term strike team, is rather over used, i think. maybe "Relief Team"?
Bah, S/T = 5 Trucks, T/F = 5 S/T