I have said before that the crew were lucky, considering the damage done to the appliance. If what Captcom just said is accurate - in regard to wearing seatbelts, then I think we all need to take notice.
Until recently our brigade's primary response urban vehicle was a single cab type with crew seating on the rear deck. We all know what rules apply to wearing of seatbelts, both in and out of the crew cab. I know from experience that we don't always put the belts on. In most cases you are fiddling around with your gear, getting jackets on and boots tied etc, and by the time that is done your are at the incident anyway. I will be so bold to say that a large percentage of crew on rear decks don't wear seatblets.
I hope that we all will think twice now when deciding wether or not to bother with the belts.
Quite clearly, wearing the belts saved the lives of the MB crew and if they were not wearing them, we may very well be looking at an entirely different scenario.
In short: Wear your seatbelts wherever possible.