The present invention is related to an apparatus and method of constructing walls of framed block assemblies including both exterior and interior partition walls which are assembled through an interlocking structure having dovetail tongues interlocked with dovetail channels. Messages in a first language are translated automatically to one or more other languages through language translation capabilities resident at online information service host computers. A means for notifying the remote receiving station and a means for neutralizing the identified environmental hazard are also carried by the field deployable marker wherein the means for notifying transmits data to the remote receiving station. A validity of a selected control channel may be determined based on consistency and a CRC, where the CRC may be derived from decoding a sub-frame.