Complex sentence: Just such a circumstance occurred in Lake Erie in February 2009, with 100 fishermen having to be rescued by helicopters, local authorities and the Coast Guard, and one man who had fallen into the water dying on the rescue flight.
Split into simpler sentences: Just such a circumstance occurred in Lake Erie in February 2009, with 100 fishermen having to be rescued by helicopters, local authorities, and the Coast Guard. One man who had fallen into the water died on the rescue flight.