University spokesman Larry Hincker said the alert messages were sent out around 7:30 p.m., and it took about 15 minutes for all 40,000 messages to be sent.
My emphasis. I'd like to point out that it took Cho 20 minutes to shoot 60 people; 32 of them fatally.
Does Larry Hincker sound familiar? Yeah, that guy. Feeling safe does not mean that the person is actually safe Larry.