 A 75-year-old American swimmer decided to take a little dip in the Seine River today in Paris to test the waters ahead of the Olympics. It's had very high levels of E. coli until recently. Authorities say the water quality has improved. The games start in a few weeks. This is CBS News. Sponsored by Progressive Insurance. We offer auto, home, and commercial auto insurance, plus a variety of business insurance options. Visit progressive.com today.