The Board of Directors of the Bangor Region Chamber of Commerce is backing a decision by its Executive Committee to fire the head of the Chamber, Candy Guerette. Guerette was let go last week after 13 years as President and CEO. The chairman of the Chamber’s Board of Directors, John Diamond, sent a letter to Chamber members saying Guerette was dismissed based on poor job performance.Diamond says at an annual meeting today, the full Board of Directors unanimously supported the Executive Committee’s decision and the way it was handled. A special meeting of Chamber members, though, is set for tomorrow. Diamond says a group of members will ask the Board to appoint a special committee to investigate the decision to fire Guerette. He says the Board will listen to comments, but not make a decision based on them. That meeting is scheduled for 3:30 at the Bangor Public Library.