The public safety in Boston.

NBC reports that suspected Boston Marathon bomber Dzhokhar Tsarnaev has started answering questions posed to him by authorities.  The article says that a "a special high value detainee interrogation team will question" Mr. Tsarnaev without advising him of his Miranda rights.  It is unclear whether this team is already at the hospital or Mr. Tsarnaev is answering questions posed by different authorities.  It may be unintentional but the report makes one wonder what is the difference between answering questions and being interrogated.