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Watch One Chicago Stars Take You Behind the Scenes of Fire, Med and P.D.

It's an all-access pass to your favorite Chicago shows

Keisha Hatchett

Have you ever wondered what it would be like to go behind the scenes of Chicago Fire, Chicago Med and Chicago P.D.? Well, TV Guide has your back! During this year's One Chicago Day, we took a tour of your favorite Dick Wolf shows set in Chicago and got the scoop on what it takes to bring those procedurals to life each week.

Chicago Fire's Joe Minoso dropped a wealth of knowledge while offering up a closer look at Truck 81. Did you know you can start the engine without a key? Plus, it looks like the truck can fit more than just hoses and axes. Minoso revealed that he once fit P.D. alum Sophia Bush in one of the storage compartments and we're just glad they eventually let her out.

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Chicago P.D.'s Marina Squerciati dished out three very important tips on how to interrogate a suspect. So if you ever need to pump someone for information, remember the following: shut the door to establish control, make sure there are chairs since interrogations can last hours, and leave your gun at the door -- it's game over if a suspect gets their hands on it.

One Chicago Crossover Exclusive: A Fire Gets Personal for Halstead

Plus, we scrubbed in with Chicago Med's Colin Donnell and learned that it takes a village to get those hunky doctors ready for surgery. If you're itching to see what it's like to star in Med, P.D. or Fire, check out the video above.

One Chicago takes over NBC on Wednesday nights starting with Chicago Med at 8/7c, followed by Chicago Fire at 9/8c and Chicago P.D. at 10/9c.