The free app, which can be downloaded from the Android Marketplace and the Apple App Store, gives residents tips on what to do in the event of specific emergencies, provides a feed of Arlington’s emergency alerts, offers a checklist of emergency supplies and lists information about several emergency-related volunteer opportunities in Arlington.

Among the 10 emergencies covered in the “What Do I Do?” section are tornadoes (“if you are inside, seek a place of refuge such as a basement”), earthquakes (“many of the 120 fatalities from the 1933 Long Beach earthquake occurred when people ran outside of buildings only to be killed by falling debris”), and chemical attacks (“immediately strip and wash… look for a hose, fountain or any source of water”).