Comment Letter RE Self-Regulatory Organizations; Financial Industry Regulatory Authority, Inc.; N… SEC Release No 34-61517 File No SR-FINRA-2010-006 From Scott R. Shewan, PIABA President, 2009 To Elizabeth M. Murphy, Secretary, Securities and Exchange Commission Date Wed, 04/28/2010 - 12:00pm Comment Letter Link Proposed Rule Change to Amend the Codes of Arbitration Procedure to Provide for Attorney Representation of Non-party Witnesses