I've sent an e-mail to my buddy at Charlottesville to find out why E6's PUC (the only PUC in the fleet) is sporting the E4 door placards.
Taylor Goodman
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA