1998
Pharmaceutical marketing
Writing clearly is a core part of both marketing and leading within a large corporation. I've also become a non-fiction author in my spare time.
I've written several books on astrophotography, including The Deep-sky Imaging Primer, The Visible Universe, The Astrophotography Planner, and The Astrophotography Sky Atlas. https://www.amazon.com/stores/author/B001KHXBRQ