Witnesses need guidance to help them understand the process of testimony and become aware of the essential issues in a case, but how far can an attorney ethically take the preparation process? Steve Bennett of Jones Day examines some of the common problems involved in witness preparation, including: protection of privilege, candor toward the tribunal, and "coaching." Ethics Rules covered include Model Rules of Professional Responsibility 3.3(a)(4) (duty to tribunal to avoid offering false evidence) and 3.4(b) (duty to avoid assisting a witness in testifying falsely).