Snowden Follows Well-Trodden Path to Russia

MartinandMitchell.jpg

William Martin and Bernon Mitchell, NSA cryptologists, at their famous Moscow news conference after defecting in 1960 (Photo: NSA)

Edward Snowden is not the first US intelligence officer to end up in Russia. Many defected there during the Cold War. Anchor Carol Hills reviews their stories with Eric Niiler, reporter with Discovery News. He says most of these men met unhappy ends.