Safety sources
The free 72-hour plan on this site is built from public guidance by these official sources. They are the authority — if our summary and their guidance ever differ, follow them.
Ready.gov — emergency supply list
Water, food, light, radio, first aid, and document basics for a household kit. Ready.gov emergency supply checklist (PDF)
CDC — power outage safety
Generator and carbon-monoxide safety, food safety, and medical-device planning during an outage. CDC: protect yourself during a power outage
FoodSafety.gov — food safety when the power goes out
The 4-hour refrigerator and 24/48-hour freezer guidance used in our plan. FoodSafety.gov: keep food safe when you lose power