Charlie Barnett Charlie Barnett

They run the drills. They speak the language. And they make the firefighter uniforms look damn good. But do the stars of Chicago Fire (Tuesdays, 10/9c) really have what  it takes to be a firefighter?

On a recent set visit, TVGuide.com had to find out. So we quizzed them with actual questions from the firefighters exam. So which cast members passed? And who went down in flames?

VIDEO: How does Chicago Fire create all those fake fires?

Watch the video below to find out:

Chicago Fire airs Tuesdays at 10/9c on NBC.