A "code red" alert is a term used in various contexts to indicate a serious emergency or critical situation. In hospitals, it often refers to a fire or a threat that requires immediate action from staff and emergency services. The alert prompts a rapid response to ensure the safety of patients and personnel. In other settings, such as schools or public venues, a "code red" may signal a lockdown due to a potential threat, like an active shooter. This alert system helps to quickly communicate danger and mobilize resources to protect individuals in the affected area.