How is it possible for someone to save someone about to drown in the ocean but then they drown instead?

Like the person who was gonna drown survived and the person who drowned was the one who saved the other person? How’s it that he drowned instead of the person who he saved?
Update: The rabbi that went into the water to save drowning student / camper ( camper is safe / made it safely onto shore) body was found after 5 days. They would not give up and finally, a boat from Maryland went to north carolina and found his body. As Jews, it is very important for us to have a proper burial/Jewish... show more The rabbi that went into the water to save drowning student / camper ( camper is safe / made it safely onto shore) body was found after 5 days. They would not give up and finally, a boat from Maryland went to north carolina and found his body. As Jews, it is very important for us to have a proper burial/Jewish burial, we cant cremate or any of that. So, they sent people from New York, New Jersey, Maryland with jets, boats, helicopters, and more and found his body. Thank you for all the feedback.
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