So, I only recently found out what my dad was doing for Texas Instruments back in the 60s
Some background ...
He started Engineering Science (the hardest, most theoretical discipline) at University of Toronto at 16 on scholarship, of course. Until around 1990 Ontario high school went to grade 13 so he was about 3 years ahead. His Master's only took one more year. He was specialised in geophysics.
Then he went, again on scholarship, to Cambridge (yes, the one in England) for his PhD. His thesis was about how the oceans being salt solutions, thus electrically conductive, affect the Earth's magnetic poles/fields as the tides change.
He got his PhD in just three years ... at age 23. From there, he, my mom, and older brother (born in Cambridge) moved to Dallas (where I was born a couple of years later). I always wondered what he was doing at a place that makes calculators.
So, it turns out that he was interpreting seismic readings from around the world to determine whether they were a result of earthquake activity ... or nuclear explosions by the Soviets.
He sort of downplayed what he did, saying that it wasn't working on weapon systems like some of the people did.