'Classic Active Shooter Protocol'

Guardian UK: Planned Parenthood officials: 'These doors stay open' after Colorado shooting - Contrary to speculation, clinics are not built like ‘fortresses’, leaders say - Clinic ‘followed classic active shooter protocol’ during attack

When the shooting started, Planned Parenthood staff and patients got to the back of the building as quickly as they could. They called 911, locked themselves in rooms and quieted their cell phones.

“We live in an area where there are tornadoes, so we do tornado drills,” she said. “We live in this country, so we do active shooter drills.”