RTE Chief McKevitt trial witness finishes evidence  July 17, 2003  (15:24) The chief prosecution witness has finished giving evidence in the trial of Michael McKevitt in the Special Criminal Court. David Rupert has spent 15 days in the witness box where he has undergone a lengthy and detailed cross examination by McKevitt's counsel. McKevitt, who is 53, denies membership of an unlawful organisation and also denies directing terrorism.