Steve Kroft with Bradley Birkenfeld, a Swiss banker who exposes how some Americans evade taxes by hiding their money in Swiss bank accounts. This has been known for decades, but not until this whistle blower was anything ever able to be traced. Byron Pitts reports on the impacts of two wars and a recession have had on the U.S. Department of Veteran's Affairs. Claims have significantly increased, slowing the large bureaucracy and frustrating many veterans. African elephants with language? Experts not only have this to be true, but are putting together a sort of elephant translation-dictionary. Bob Simon in Central Africa for this absolutely incredible story.