a system for integrating environmental sensors and asynchronous ubication repeaters forming an n - point spatially random virtual lattice network includes a ubication repeater for communicating both positional and environmental information to a two - way radio transceiver used by police or firefighters . the ubication repeater initially determines its position upon actuation from the two - way radio transceiver where environmental information can be transmitted to the firefighter &# 39 ; s two - way radio transceiver or to a central location . the central location can provide a composite overview of an environmental situation during an emergency .