LOS ANGELES (AP) — It had all the makings of a massacre. Six guns, including a Colt AR-15 rifle. About 1,000 rounds of ammunition. A bulletproof vest. And an angry Southern California man who threated to kill his co-workers at a hotel and its guests.
But a concerned colleague intervened, alerting authorities who arrested 37-year-old Rodolfo Montoya, a cook at the Long Beach Marriott hotel, the next day and discovered the arsenal where he lived in a rundown motor home parked near industrial buildings.
In the weeks after three high-profile shootings in three states took the lives of more than two dozen people in one week in August, law enforcement authorities nationwide reported a spike in tips from concerned relatives, friends and co-workers about people who appear bent on carrying out