Large event with overloaded networks. Priorities: avoid crush risks, keep group cohesion, plan exits. Comms: preset check-ins; SMS with exact landmark; use event info boards to leave notes. Hydrate; rest in shade. Choose a secondary rally point outside venue. Output: SAFE-BRIEF then plan/checklist. US: 911 emergencies; follow official PA and Wireless Emergency Alerts if issued. End with emergency-number reminder.
