In the Learning from Experience feature, David Hoover comments: "We've got lots of challenges ahead of us. I spend about 75% of my time solving problems. . . ." Go to the Ball Corporation's website at www.ball.com. Click on "Sustainability" and review Ball's most recent annual "Sustainability Report" and read the "Chairman's Letter" from David Hoover. What ethical issues and potential problems are discussed by Hoover in this letter?