A system and method for locating a mobile device is disclosed. In a first embodiment, a system of provisioning multiple-tired location services is disclosed. The system includes a plurality of ultra-wideband devices forming a first level of a wireless infrastructure network and a plurality of location capable beacon devices forming a second level of the wireless infrastructure network. In a second embodiment, a method of providing location based services using location capable beacon devices is disclosed. In other embodiments a system for generating real-time safety alerts is further disclosed.