        He finished his survey of the area, and got back to his feet, knees popping loudly.  Dale stood stationary for a moment—he always got dizzy when he stood up quickly—and then began walking back to his campsite.  He picked up his thermos, wincing at the hot metal, then his tripod.  As he reached the shade of the trees, his neck began to throb, and he knew he was going to pay for spending so much time on the beach, but it was probably worth it.  The pain might help him focus, and might help remind him that he hadn’t imagined the scene at sunrise.