HAYWARD -- What to do before, during and after a disaster is the focus of an expo Saturday that will draw emergency and social service agency workers from throughout Alameda County.

The free expo, called "Operation Independence IV," will have emergency preparedness workshops, exhibits, demonstrations, training, vendors and door prizes. Some classes are for the public, others are for first responders and health care workers, a Hayward official said.

"We're have workshops on how to prepare for an emergency in your home and how to care for older adults and people with disabilities," said David Korth, neighborhood services manager for the city of Hayward.

The expo will run from 9:30 a.m. to 3 p.m. at Hayward City Hall.

Tents will be set up behind the building for workshops on fire extinguisher use, smartphone emergency apps, survival kits, sheltering in place, pet first aid, how to prevent falls, and ways to keep water safe and make food last longer during a power outage. There will be a medical tent, and one will have a cache of the kinds of emergency supplies stored throughout the county.

First responders and health care providers can take continuing education classes in disaster first aid, controlling bleeding, managing shock, splinting, keeping airways open, triage and treating wounds. In the afternoon, they will take part in a mass casualty drill in the building's basement.

"We will have EMT students playing the roles of injured people in a disaster. The first-responders will need to assess the situation and practice what they've been learning, both that day and before," Korth said. "There will be lots of moaning and groaning. We're trying to make it as realistic as possible."

Nonprofit groups and businesses that provide emergency services and training will have exhibits in City Hall's rotunda, and emergency vehicles will be on display in front of the building. Police, sheriff's deputies and firefighters will talk about how the equipment is used.

"Dealing with a disaster requires an extraordinary level of cooperation," said Hayward Fire Chief Garrett Contreras. "That's why the city of Hayward has joined forces with the county and other local public agencies, the business community and faith-based service organizations to host this event."

Contact Rebecca Parr at 510-293-2473 or follow her at Twitter.com/rdparr1.

Emergency preparedness expo
When: 9 a.m. to 4 p.m. Saturday
Where: Hayward City Hall, 777 B St.
Information: 510-208-5943
Those bringing cans of food to donate to the Alameda County Food Bank will receive extra door-prize tickets.