Webscanner radio is a free mobile app available on ios and android that provides live police and fire radio streams.
Webthe world's largest source of public safety, aircraft, rail, and marine radio live audio streams
Webthe most popular feed type available falls under the category of public safety and includes live streams from police, fire and ambulance personnel.
For more on scanning.
Webdownload fire department radio＋scanner and enjoy it on your iphone, ipad and ipod touch.