For more than 33 years I was the chief mechanical design engineer at Johns Hopkins University Applied Physics Laboratory in the strategic systems division. I designed equipment for submarine systems. It was an interesting and exciting job. After my retirement, I grew bored with inactivity so I became a substitute teacher in the Baltimore County Public School System. I've been doing that for six years now. I've helped countless children who were struggling with math. My engineering career was quite rewarding, but the good feeling I get when a student says to me "Ah, now I understand" is equally satisfying.
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