Relavant to Here: Firearms instructor. Small unit tactics instructor and OPFOR member. Land navigation instructor (and over 1 million views of my YouTube videos on that), communications, MDMP, and other instruction. Part owner of a war gaming and training organization. Board member of local action shooting club. Run Star-Firearms.com, informational site for the defunct Spanish pistol and SMG maker. Have visited the (UK) National Firearms Center collections for research.
Professionally: Human factors engineer, graphic designer, UX designer. Wrote the book on mobile design patterns, best known for ongoing research into how people really use touchscreen phones and tablets. He is a reformed unicorn who has been a DBA and a FED but has focused on designing for mobile and multi-channel products since 1999, designing the first Google mobile search, the first mobile app store (for Sprint), mobile browsers including parts of the Samsung one you might be using right now, websites like Weather.com and Lowe's home improvement, and apps for companies like Hallmark, US Bank and Cummins diesel. Regularly writes column for UX Matters magazine, has spoken on these topics in at least 6 countries.