https://www.siliconvalley.com/2022/04/11/san-jose-home-depot-fire-raises-questions-about-stores-sprinkler-and-alarm-systems/

Two days after a rapidly-moving fire erupted in the lumber section of a South San Jose Home Depot, leveling the giant home improvement store, critical questions remain unanswered about what caused such a catastrophic blaze — and how well the store’s fire suppression systems were working when the flames broke out.

First-hand accounts from customers and employees who were at the store when the fire began have raised doubts about when the store’s fire alarms sounded, and whether the store’s sprinklers ever went off. So far, the San Jose Fire Department has yet to answer any questions from this news organization regarding the store’s sprinkler and alarm systems. Home Depot, meanwhile, has referred all questions to the fire department.