Jones leads the SPIDER balloon-borne CMB polarimeter (and the successor Taurus mission), building and flying large TES bolometer arrays from Antarctic long-duration balloon platforms to measure degree-scale CMB polarization with minimal atmospheric loading, and also leads SuperBIT, a near-diffraction-limited stratospheric optical telescope. Like Staggs, he is included here as an astronomy/instrumentation pivot whose science case rests on cutting-edge cryogenic detector-array sensitivity.