And new topic. As a first responder, and knowing something about the design of ARFF vehicles, and after seeing video and pics, I'll be curious to read the final report assuming it includes an analysis of the firefighting - what went right and what could be improved. Again judging from the video and pics, the aircraft burned quite quickly (I should not make any assumption re: rate of burn). The ARFFs likely could not have known, immediately, that all were evacuated, and would have responded as assuming there were saves to be made. At what point did the ARFFs know all were evacuated and decide to standdown and let it burn?