My SES unit (Corindi) was invited to Coffs unit for a GR (General rescue) exercise - a large scale industrial accident. This is the scenario we got (was random, victims scattered around). The bad news for Jeff (team leader) was that we couldn't use chainsaws (Jeff loves chainsaws). It turned out to be one of the toughest - made worse because of a mis communication that we didn't bring our own gear so had to beg hard and long to get anything. We did get him down but it took a long time. I think we learned a lot and I hope I never have to do it in real life (but I hope I have learned enough that I can help).