SAN FRANCISCO (AP) — Emergency operation centers in the San Francisco Bay Area are getting ready for a big one.

An annual test set for Thursday will simulate a response to a major earthquake, 72 hours after impact, coupled with a cyber-attack on local government.

Exercise Director Corinne Bartshire says the timeframe was chosen so governments would have enough time to establish distribution points for food and water.

The exercise is part of Urban Shield, which involves hundreds of people working together to simulate disaster preparedness.Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.