Occasionally Bill would fly the plane back over the shore to see if any additional instructions were being sent up to him by the panels. Each time the same panels were displayed, “Battery ready to fire.” That being the case he must place his plane so that he could see the shots when they fell. Once he was sure that the guns had been fired but he had not seen the first impact with the water. The only location of the shell that he secured was after its first bounce from the water. He then sent down, “lost.” This indicated to the firing battery that the observer had not seen the last shot.