From RB:

40290 sneak peek – This engine is heading towards a PA. dept. It has a unusual color. 
#chicagoareafire.com; Firetruck; #Pierce; #Enforcer; #ElkinsParkFireCo;
 
#chicagoareafire.com; Firetruck; #Pierce; #Enforcer; #ElkinsParkFireCo;
 
#chicagoareafire.com; Firetruck; #Pierce; #Enforcer; #ElkinsParkFireCo;