The newest Superman movie “Man of Steel” began filming in Chicago on Wednesday. The project has made stops in a few areas around Chicago— spending the last two weeks in the far western suburbs, and landing downtown in the Loop this week.

Betsy Steinberg, managing director for the Illinois Film Office, said big movies projects like this one have the potential to boost the state’s economy.

“A caterer is feeding several hundred people a day, several times a day, they’re shopping in our local grocery stores. Carpenters, painters, welders, are building set pieces, they’re shopping in our lumber yards, they’re buying our hardware, so the ripple effect in the economy is really great and that’s why we work so hard to try and get projects here,” Steinberg said.

As for other details about the project, Steinberg said everything — especially the movie script — is being kept under lock and key. Filmmakers are still referring to the project with a code name — “Autumn Frost.” Steinberg said this is fairly common for major film projects, and most of the time the code name has nothing to do with the actual movie.

Filming will continue in downtown Chicago for the next 10 days. Chicagoans should be on the look out for Amy Adams, Henry Cavill, Russell Crowe, Diane Lane and Kevin Costner, who will all be starring in the film.