THE CASE AGAINST NADA PROUTY - Former FBI and CIA terrorism fighter Nada Prouty was herself accused of aiding terrorism, but in her first interview, she denies she was anything other than a patriot. Scott Pelley investigates her case. Graham Messick is the producer. THE RUSSIAN IS COMING - Mikhail Prokhorov, perhaps Russia's richest man, discusses his planned purchase of the N.J. Nets basketball team, his vast wealth and the surprisingly unusual way he made most of his money in his first American television interview. Steve Kroft reports. Robert Anderson is the producer. THE SHARKMAN - Anderson Cooper dives unprotected with great white sharks and the South African who's spent more time up close with the ocean's most feared predator than anyone else. Michael Gavshon and Paul Bellinger are the producers.