At approx. 1545 hrs. Solvay Fire was alerted to a reported residential fire in Warners first due. Rescue 11, with a staffed crew, filled the assignment for Engine 21 as the R.I.T. First due units arrived to find fire in the walls after an active chimeny fire. Command put the R.I.T. in staging and eventually released Rescue 11 to stand-by at Warners Station. Rescue 11 went back in service at approx. 1715 hrs.