6. Who did the FBI next focus on as a suspect? What evidence did they base this on? What problems are there with this evidence?
8. What happened to Ivins? Was the FBI to blame for this?
9. When the FBI gave it's evidence to an independent lab, what did this lab find? What problems does this have for the FBI's case against Ivins?
10. According to critics, what are the mistakes that the FBI and other investigators made in the anthrax case? Why might these mistakes have been made?