Wendell Potter can
remember exactly when he took the first steps on his journey to
becoming a whistleblower and turning against one of the most powerful
industries in America.
It was July 2007 and Potter, a senior
executive at giant US healthcare firm Cigna, was visiting relatives in
the poverty-ridden mountain districts of northeast Tennessee. He saw an
advert in a local paper for a touring free medical clinic at a
fairground just across the state border in Wise County, Virginia.