Along with George, Ryan Gosling, Marisa Tomei and the other stars, the movie shoot has brought to town a huge crew — an army, really. So who’s feeding them? I was cutting through the Carew Tower arcade when I thought I saw the answer to that question — a redhead wearing a black chef’s jacket and a baseball cap with a skull-and-crossed-cutlery logo. “Hey, catering guy!” I hollered. That’s how I met Dan Gearig, co-founder of Chow Catering out of Detroit.