Physics PhD.
Nuclear physics at the quark level (SLAC, DESY, LAMPF, MIT/Bates, TJNAF, TRIMUF).
JPL radar science and engineering (SRTM, SMAP, Aquarius, KaRin). Mars EDL sensing (Spirit, Oppy, Phoenix, InSight, Curiosity).
Unspecified DOD contractor: electromagnetic remote sensing of Earth (DMSP, NEON) and other.