The big cross

So this is the second HUGE cross I've seen by the side of an interstate. I would like to know how one gets into the huge cross making industry. I don't think that in a million years that would cross my mind as possible occupation. This particular one was somewhere in between Indy and st. Louis. We went there Friday to pick up robin and bring her home for spring break. 10 hrs in a car sucks, but we had fun. More later I'm sure.