Finally, I was out of the riptide and back on my feet, standing in chest-deep water after what seemed like forever. I was exhausted. I didn’t know it but Jill had jumped in too and, as I looked to my right, she was in the riptide now and struggling hard toward the beach. In spite of her best swimming, she was moving steadily backward toward the open ocean and would be out of reach any second. My first instinct was to swim over to her as fast as I could…