Past: Specialty Engineering at Boeing After obtaining a PhD from Caltech (physics), I went industrial, and spent 30+ years in the aerospace industry. I spent most of that time in Anaheim, CA while... After obtaining a PhD from Caltech (physics), I went industrial, and spent 30+ years in the aerospace industry. I spent most of that time in Anaheim, CA while the employers revolved about. My specialties were electro-optics, radiation effects, electromagnetic effects, and optical detector physics...