bud zumwalt -- close the quote. bud zumwalt had asked all the right questions, but he received dishonest answers. and he was intent on never letting that happen again. so at the time of the persian gulf war, bud's thoughts were on the fact that it took the government 15 years to deal with agent orange. adding to this was he and his wife's anxiety and the fact that their surviving son jim, who's here in the front row, was deployed in the gulf. and as soon as president bush began the deployments, bud called secretary of defense cap weinberger to urge that daily positions be taken of all tactical units, be recorded so that future studies concerning health effects could take place. should there be chemicals. bud worked tirelessly in this effort. he never stopped fighting for those unprotected. and i think it's a good illustration of the man and his life. so with that, i'll stop. we have time or for questions, i'll take them. i've just tried to introduce you to the story. many of you know the story of this remarkable man

now on booktv, larry berman recalls the life and military career of admiral zumwalt who died in 2002. admiral zumwalt was commander of naval forces in vietnam and the chief of naval operations from 19721974. mr. berman reports on admiral zumwalt's military career and his work on behalf of veterans and his retirement. it's a little over an hour. t to introduce you now, joining us live is steven carter, and he is the author among many other books of this one, his most recent, "the impeachment of abraham lincoln: a novel." professor carter, what are -- there are two premises in here that i want to get to that are historically inaccurate. number one, abraham lincoln survives the assassination attempt and abraham lincoln is impeached. where did you come up with this? >> guest: i'll start by making clear in spite of the title, i'm a lincoln fan. this is not an argument on behalf of lincoln's impeachment, not a brief, but just a novel. as a lincoln fan and interested in power and history, it's a question that suggested itself. what if lincoln had survived, and what if, and my telling of poli