>> there was only one individual i can remember, and that was caroline levy of. >> for these top management people? >> yes, they were. >> would it be fair to say senior management was troubled or worried about the work you were doing it? >> i did not think so. on the way back we all thought things went very well. subsequently, we were told our laboratory might be shut down, but they wanted to continue the research, and the possibility was that we would continue in switzerland. host: put this in context. that was 1994. how long did you work for philip morris. >> from 1980 until 1984 in richmond, virginia. host: what were your circumstances? did you have a contract thomas -- did you have a contract? guest: i was an employee. we did our research with the secrecy agreement. of we were fired on april 5 1984, and there was an agreement they had signed until the congressional hearing, where mr. campbell actually released myself and dr. paul, and we appear before congress. >> why did you sign a secrecy agreement? >> it is not unusual. new sign an agreement of things that you cannot divulge, but if