nbchicagofire has posted a photo.

^Erin is Jessica/Sophia is Arianna^

nbcchicagofire It's crossover week with @nbcchicagopd @jasonbeghe @taylorkinney111 @jess_spencer @Ari.Lopez

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TaylorKinney111 has posted a photo.

^Sophia is Arianna^

Taylorkinney111 Having a little fun on set with @Ari.Lopez

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ElleVoightHalstead yay_stephy12

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