Strategic National Stockpile
The Strategic National Stockpile (SNS), originally called the National Pharmaceutical Stockpile (NPS), is the United States' national repository of antibiotics, vaccines, chemical antidotes, antitoxins, and other critical medical supplies. Its website states: "The Strategic National Stockpile's role is to supplement state and local supplies during public health emergencies.
Source: Wikipedia — Strategic National Stockpile (CC BY-SA 4.0)