IMO, it is helpful the take a look at the actions of the folks involved before deciding if they should be “charged.”
For example:
Did they violate any regulations that they knew about or should have known about? And/or
Did they take “unreasonable” risks, or fail to take “reasonable” precautions for the activities they were engaged in? Or,
Did they take “reasonable” precautions and care, but still were the victims of “bad luck.”
Every rescue lies somewhere on this spectrum. At one end, IMO they should be charged; at the other, no. In the middle, it is debatable.