When a critical part or commodity suddenly becomes constrained, most organizations are forced into reactive mode. Whether the issue is chips, filters, oil, or another high-impact component, many OEMs do not have a clear playbook for recognizing, prioritizing, and managing shortages once they begin. This session will focus on that gap. Rather than addressing long-term supply chain resiliency, this discussion will center on the practical realities of reacting to shortages that are already happening. How do companies recognize that a supply issue is becoming a true business risk? What signals matter most? How should scarce supply be allocated across customers, channels, and parts? And what actions can be taken when a key supplier disruption affects multiple OEMs at once? The session may broaden from commodities to critical parts more generally, creating space to discuss the specific shortages companies have faced and whether any strategic response models are beginning to emerge.