Last summer my son dove in a lake to search for a friend who jumped in and never came up. He found him, dragged the body to the beach and started CPR.
Yes, it his him and the others pretty hard then they went on.
It helped that the kid who died was a strong Christian and moved safely into the arms of the Lord.
Good to have that kind of faith. Roy Chapman Andrews who as the real Indiana Jones had something similar happen with his best friend in Wisconsin when he was around ten. To Andrews it was a watershed experience and he had no real beliefs afterward of anything spiritual and he saw the universe as random with no transcendental purpose.