On today’s Underreported, we take an in-depth look at the world’s most notorious arms dealer: the Russian entrepreneur Viktor Bout. Then, Rain Pryor remembers growing up with her father, Richard Pryor. And we talk to the chief American interpreter at the Nuremberg trials in 1945. Plus, Christine Ebersole and composer Scott Frankel tell us about bringing two very eccentric relatives of Jacqueline Kennedy Onassis to life in the musical Grey Gardens.