I was a aircraft electrician in the Navy and a friend of mine was a dental tech. Yeah, so what? Well after I returned to the US I came across a ex-Navy dental technician who retired from the Navy and started his own lab. I started working for him in 1971 and the rest is history. I've gone from the days of your basic Ceramco crown with standard opaque's (paint-o-pakes were just coming out) to Cad-Cam and Emax.