BALTIMORE — In March in a McDonald’s parking lot off a busy street, mental health clinician Michala Williams met a 38-year-old woman in a car. However, the units have a limited scope, focused on people in mental health crises. Whaley hopes the expansion will help the city think differently about how it responds to residents in crisis — regardless of why they’re calling 911. The goal is to reduce violence, get people proper resources, and avoid the cycle of incarcerating people dealing with poverty, addiction, and mental health. It said police backup was needed for only 0.02% of those calls and that response times have improved for all types of 911 calls.