Tower 1 w/4 and Engine 1 w/3 headed to Macedonia Rd. at 0026 hrs for a residential fire. Engine 6 w/1 arrived with two trailers well involved. The Engine and Tower arrived shortly after and were forced to a defensive operation. The two double-wides were strategically placed over a basement and in no shape for interior operations. Crews from the Tower performed overhaul and the Engine crew took on extinguishment. The fire was determined to be suspicious and the scene was turned over to the Virginia State Police.