WE DISCOVERED A POPULATION OF POWERFUL L>1E47 ERG/S RED QUASARS AT Z=2-3 WHICH SHOW UNPRECEDENTED SIGNATURES OF FAST V>3000 KM/S OUTFLOWS IN THEIR [OIII]5007A LINES. THESE OBJECTS MAY BE SIGNPOSTS OF THE ``BLOW-OUT" PHASE OF QUASAR FEEDBACK ONTO QUASAR HOST GALAXY AT THE EPOCH WHEN QUASARS MAY HAVE MADE THE STRONGEST IMPACT ON GALAXY FORMATION. HERE WE PROPOSE NUSTAR+XMM OBSERVATIONS OF ONE OF THESE OBJECTS A TARGET FROM OUR APPROVED JWST EARLY RELEASE SCIENCE PROGRAM. THESE DATA WILL ALLOW US TO DETERMINE THE PHYSICAL PROPERTIES OF THE CORONA AND THE INTRINSIC ACCRETION LUMINOSITY; CONSTRAIN WIND DRIVING MECHANISMS; AND PROVIDE A ``GOLD STANDARD" SPECTRUM FOR STUDIES OF THE OBSCURED HIGH-REDSHIFT QUASAR POPULATION WHICH REMAINS THE SINGLE MOST ELUSIVE KEY TARGET OF X-RAY ASTRONOMY.