Methods and devices are disclosed for providing audible, visual, and tactile alerts detectable by first responders in a geographic region impacted by a mass casualty event, such as a natural disaster or a terrorist attack. In certain aspects, an electronic device of an individual trapped within a damaged structure may establish wireless communications with a mobile cellular site and may receive a request to generate an alert audible to first responders. In response to the request, the electronic device may identify first device settings corresponding to the audible alert, and generate the audible alert in accordance with the obtained first device settings. In certain aspects, the audible alert may enable first responders to identify locations of victims trapped within structures damaged by the mass casualty event.