Chicago Fire‘s Joe Cruz (Joe Miñoso), first the driver of Truck 81 and now part of Rescue Squad 3, hasn’t had an easy life, but he always did a stalwart job as a firefighter. A good man raised in a tough neighborhood, early in the show, he let a gang leader die in a fire, in order to save his younger brother’s life, and was wracked with guilt, but his boss Lt. Casey (Jesse Spencer) refused to fire him.