The man suspected of opening fire this morning at a Northern California quarry is still at large. Police are searching homes near the quarry where Shareef Allman is believed to have killed three co-workers and wounded six others. He reportedly stormed out of a meeting and returned with a rifle and handgun. After leaving the quarry, the suspect shot a woman in the leg at a nearby Hewlett-Packard parking lot and attempted to take her car. Schools in Cupertino were on lockdown as SWAT teams searched for the suspect.