It was a beautiful day in August. The sky was blue, and the weather was perfect. We put on our parachutes, which were required in an open-cockpit airplane when doing aerobatics, and took off for the practice area 30 miles south of Sioux Falls. I climbed to 4,000 feet and looked out at the cornfields and beautiful prairies below. I told Charley I would do two loops, and told him he could follow me through on the controls to get the feel for it. Then, on the third loop, I’d let him take the controls, and I told him I would follow him through.