The U.S. Food and Drug Administration (FDA) is a federal agency within the Department of Health and Human Services responsible for protecting and promoting public health by regulating foods, human and veterinary drugs, vaccines and other biologics, medical devices, cosmetics, tobacco products, and radiation‑emitting electronics. FDA’s modern regulatory authority stems from the 1906 Pure Food and Drugs Act and the 1938 Federal Food, Drug, and Cosmetic Act, and its headquarters is located on the White Oak campus in Silver Spring, Maryland.

Zephyr is the English form of Zephyrus, the personification of the west wind in Greek mythology, and by extension a term for a gentle breeze. The name has been adopted widely for vehicles, artworks, technologies, and medical products, including the 1934 Pioneer Zephyr train, Amtrak’s California Zephyr route, the Airbus Zephyr high‑altitude solar aircraft, the Zephyr open‑source real‑time operating system, and the Zephyr Endobronchial Valve for emphysema.