family? don t know. i actually have a degree in chemical engineering from carnegie-mellon and i worked in that field for several years before coming into the book industry but i am far from being able to go into that. i m not sure what my future holds. al schuman is a co owner of the trover books shop. .. robert mcnamara defense secretary during the johnson and kennedy administrations appeared on booknotes in 1995 to discuss his book, in retrospect the tragedy and lessons of vietnam. according to mr. mcnamera u.s. policy was based on the domino theory in which the loss of vietnam would initiate a collapse of nations including the united states. robert mcnamera died on july 6, 2009. this booknotes is a two-hour program. c-span: robert mcnamara, when was the first time you can ever remember thinking about public service? guest: i hadn t anticipated that question. very early, i think. in the book, you may have noticed, there s a pictorial section, and i was under contr