From the Ward Apparatus Facebook page: 

This rescue will be supporting the brave men and women of the Chicago Fire Department! This 12′ truck with an all-aluminum body was built on a Ford F550 chassis. Fortunately, it was already built and ready to go. All it needs is some Chicago FD decals! 

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

#chicagoareafire.com; #FireTruck; #ChicagoFD; #rescue; #squad; #Ford; #F550; #WardFireApparatus;

Ward Fire Apparatus photo

thanks Martin