In high-stakes scenarios like city-wide crises, resilience demands more than tradition—it requires agility. Agile methodologies, paired with the innovative power of purple teaming, transform crisis simulations into dynamic, adaptive exercises. By iterating on real-world scenarios, fostering cross-functional collaboration, and leveraging adversarial insights, leaders can build robust defenses that evolve in real time. This article explores how simplicity and agility redefine preparedness for complex challenges. Discover how these strategies empower teams to outpace threats and safeguard critical systems.