Jesse Spencer Jesse Spencer

Trucks 81 and 66 have been butting heads a lot this season on Chicago Fire — primarily because of 66's and Welch's adamant opposition to the idea of Dawson (Monica Raymund) joining their crew. However, on Tuesday's new episode (10/9c, NBC), their clash will go from emotional to physical — and it may cost at least one person their life.

In this exclusive sneak peek, Trucks 81 and 66 are involved in a brutal crash that overturns both trucks and leaves several of Firehouse 51's beloved team members severely injured. Upon further examination of the wreck, Mills (Charlie Barnett) discovers at least one firefighter bleeding and knocked out without a pulse. So who might be headed for a body bag? No matter who, it's way too soon to lose another first responder after the devastating loss of Shay.

TV's most heartbreaking deaths

Check out the exclusive video below to see the aftermath of the accident:

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