Which regulatory body issues NOTAMs regarding TFRs?

The correct entity that issues NOTAMs (Notices to Airmen) regarding TFRs (Temporary Flight Restrictions) is the FAA (Federal Aviation Administration). The FAA is responsible for ensuring the safe and efficient use of the National Airspace System, which includes regulating and disseminating information about air traffic operations and restrictions. When a TFR is established, typically due to events such as air shows, disasters, or VIP movement, the FAA generates a NOTAM to inform pilots and other aviation personnel of these temporary restrictions to help prevent accidents and enforce airspace safety.

Other organizations listed, such as NASA, the Environmental Protection Agency, and the Department of Transportation, do not typically engage in the issuance of NOTAMs pertaining to flight operations. NASA conducts research and development in aviation but does not manage airspace regulations. The Environmental Protection Agency focuses on environmental protection regulations, while the Department of Transportation oversees a broader range of transportation issues, but neither has a direct role in operational airspace management like the FAA does. Therefore, the FAA's role in issuing NOTAMs for TFRs is critical for maintaining safety and awareness in the airspace system.