to respond to emergencies. lloyd lacuesta is live and shows us how these rolling blackouts work. >> reporter: this truck is being taken out of service in an effort to save money but some wonder at what price public safety. >> reporter: it's called rolling brown outs of fire companies at different stations. >> that will give us four additional firefighters to staff companies throughout the city instead of calling overtime. >> reporter: some 100 firefighters responded to last week's fraternity house fire at san jose state. now with the possibility of two fire engines being taken out of...