On this one unforgettable morning, as we marveled at the breathtaking beauty of the placid weather and calm seas, we arrived at Barking Sands exactly on time with a comfortable fuel load remaining, so we reported on station and began to loiter, awaiting the first shot. When radio traffic indicated that the shot conclusion had been confirmed, we proceeded toward the target datum. I hadn't been in the water yet that day and was eager to get wet as we overflew the capsule smoke flare on the initial upwind reconnaissance overflight leg. As the pilots turned downwind, I moved into the cargo doorway, noticing that the water was so calm and clear that I could see many feet into its blue depths. The hoist operator, maintaining communication with the aircraft commander up in the cockpit, was at my shoulder, ready to give a tap signal to jump, and I moved my hand to the gunner's belt release, watching our progress upwind, into the datum. I could tell that we were slowing through translational lift, getting very close to the now irresistibly inviting clear blue surface, nearing the capsule smoke flare, and I was sure the hoist operator was about to tap my arm, so I stepped out.