086218

We propose short XMM observations of sources detected in the deepest Swift-BAT 105-month stacked all- sky maps comma but for which a Swift XRT observation has no obvious X-ray counterpart. Our past studies of these faint BAT sources found some of the brightest examples of reflection-dominated AGN in the sky with accretion rates several times higher than typical AGN that contribute significantly to black hole growth in the nearby universe. This study will have enduring legacy value by completing the counterpart association for the full 105-month all-sky catalog outside of the Galactic plane openPar|b|>10closePar. XMM is critical to identify these sources because of the factor of 13X higher sensitivity than Swift XRT combined with a very large FOV openPar28.4.closePar to resolve any contributing sources.