Conduct an internal audit of your organization's or community's current biological threat preparedness. Identify specific vulnerabilities in detection, containment, and response protocols, considering the 'insidious onset' and 'exponential decay' described by Jacobsen.

Based on Jacobsen's 'ticking-clock roadmap,' create a phased response framework for the first 72 hours of a suspected biological event. Outline specific actions, responsible parties, and communication strategies for each 12-hour increment, focusing on early detection, rapid containment, and infrastructure resilience.

Recognizing the 'infrastructure battle for human existence,' identify 2-3 key agencies or community groups that require enhanced collaboration for biological threat response. Develop a plan to foster trust and streamline communication channels, ensuring a unified front against both the pathogen and potential societal breakdown.

Declare the single immediate physical action you commit to taking today.