Providing medical care during a mass event requires important situational awareness and preparation. Significant planning and relationship building provides a foundation for creating an operational outline, and establishing crowd dynamics and expectations for related medical activities. Collaboration with stakeholders will provide insight into the operations of various other event management entities, and allows for more seamless operations during the event. Once an operational plan has been established and circulated, the event medical team can be prepared for the expected external and crowd conditions and respond appropriately, while maintaining vigilance for any emergency that may arise. Contingency planning is key for the medical team to have appropriate emergency response defaults. Special attention is also needed on communications strategies for real-time intel, information dissemination, and crowd management. Once the event reaches its end, it is important to establish stand-down procedures to be followed as the crowd disperses to ensure an orderly event closure. After action reports can provide valuable insights for future crowd management.