PDS456 THE MOST LUMINOUS NEARBY QUASAR IS THE PROTOTYPE ULTRA FAST OUTFLOW. WITH NUSTAR AND XMM-NEWTON WE ESTABLISHED THE PRESENCE OF A FAST (0.3C) WIDE ANGLE ACCRETION DISK WIND WITH SUFFICIENT POWER TO PROVIDE SIGNIFICANT MECHANICAL FEEDBACK INTO ITS HOST GALAXY. IN A SUBSEQUENT ANALYSIS OF ARCHIVAL HST OBSERVATIONS WE HAVE FOUND EVIDENCE FOR A FAST 0.3C UV COUNTERPART OF THE WIND WHICH MAY MAKE PDS 456 THE FASTEST BAL QSO KNOWN TO DATE. WE HAVE NOW BEEN APPROVED A FURTHER 2X3 ORBIT HST/COS OBSERVATIONS FOR 2018 TO CONFIRM THE FAST NATURE OF THE UV WIND AND ITS VARIABILITY. HERE WE REQUEST SIMULTANEOUS X-RAY COVERAGE TO BE COORDINATED WITH HST VIA 2X80 KS NUSTAR + XMM-NEWTON OBSERVATIONS WHICH WILL REVEAL THE WIND STRUCTURE AND VARIABILITY FROM THE UV TO HARD X-RAYS.