sentences:  Defense attorneys asked Zinn to explain to the jury the history of U.S. involvement in Vietnam from World War II through 1963.Zinn discussed that history for several hours, and later reflected on his time before the jury.I explained there was nothing in the papers of military significance that could be used to harm the defense of the United States, that the information in them was simply "embarrassing" to our government because what was revealed, in the government's own interoffice memos, was how it had lied to the American public.