"Shelter-in-Place" is a safety procedure used during emergencies, such as natural disasters or hazardous material incidents. It involves staying indoors and securing the environment to protect against outside dangers. People are advised to close windows and doors, turn off ventilation systems, and stay informed through reliable sources like local news or emergency services. This practice is essential for minimizing exposure to harmful substances or severe weather conditions. It is important to have an emergency kit ready, including food, water, and medical supplies, to ensure safety during the duration of the shelter-in-place order.