A crash course in changing the world.
Since my nearest metropolitan area is Washington, DC, there are many redundancies of infrastructure protection available and accessible to interested "first responders," community leaders, neighborhood watch coordinators, shelter and assistance organization heads, et cetera.
Duties in a crisis range from the unpleasant eventuality of preparing and staffing a temporary (mass) morturary, and attendant guidance for preserving any available identifying information, to national/federal emergency management guidelines and homeland security protocols for interagency cooperation in assisting civilians, staff of foreign embassies etc., schools, shelters, hospitals, hotels and so forth undertake either evacuation or shelter in place efforts.
Communications redundancies, including what is called interoperability (exchange between emergency responders and public-safety broadband communications) are in place, and should/can be augmented with ham and am radio, even walkie-talkies (a lot of the local guard patrol services use walkie talkies), cel phones, and texting devices.
Since there is some industry, there are rail and metro-rail systems, trucking and warehousing systems, and multiple theater and sports arenas, plans encompass responder training to these facilities.
Evacuation routes and first and follow responder transit plans are in place, and local officials and the emergency message alert system has/will have this information available.
Ushahidi could be of assistance in coordinating mapping of shelter-in-place populations, in showing open roads or traffic-jammed routes on gps-coordinate maps. Ushahidi could also reference existing medical, food, water, medicines, shelter supplies, and coordinate hospital, fire, police, and other rescue and relief efforts. Ushahidi could also take advantage of the major news networks (TV, radio, broadband, press) located in the area, for additional sources of information, and avenues of dissemination (broadcast) of information.
In the event of a natural disaster, fire, storm, flood, snowfall, the redundancy systems could be used as well. There are many items to be considered in the event of crisis, but for this Learn7 post, Ushahidi and its potential are the focus, and resilient survival the goal.