Marc Singer — Canadian Actor born on January 27, 1948,

Marc Singer is a Canadian-born American actor best known for his roles in the Beastmaster film series, as Mike Donovan in the original 1980s TV series V, and his role in Dallas as Matt Cantrell... (wikipedia)

I'll give you an example. Henry, the old black guy who cooks the corn bread, he worked on the railroads for about 20 years so he knows how to lay and build track.
I never wanted to be a film director but after this experience I really loved it. I would love to do more documentaries but it's difficult to find backing for them.
We didn't have a drill so he would burn the holes through the wood with a metal rod that he heated up in a fire. Can you imagine an ordinary crew doing that?