What do I do if I’ve been subpoenaed to testify about something I interpreted? How does Tenet 1 (Confidentiality) apply to this situation?

These resources address subpoenas and testifying in court:

•  To Testify or Not to Testify: That is the Question (October 2002 VIEWS article)
•  Responding to Subpoenas (August/September 2004 VIEWS article)
•  The Murky Waters of Testifying in Court (November 2006 VIEWS article)