Which agency is NOT specifically involved in laser regulation?

The correct choice reflects that NASA is not specifically involved in laser regulation. OSHA (Occupational Safety and Health Administration) is responsible for ensuring safe working environments, which includes setting standards for laser safety in workplaces. The FDA (Food and Drug Administration) regulates the safety and effectiveness of laser products, particularly medical lasers, ensuring they meet safety standards before being approved for public use. The FAA (Federal Aviation Administration) also has regulations concerning lasers, especially to prevent interference with aircraft operations, as lasers can pose safety risks in aviation.

In contrast, NASA, while it may employ lasers in various research and testing capacities, does not have a regulatory role specifically governing the use of lasers in the broader context of public safety and health, unlike the other listed agencies. Therefore, recognizing the specific roles of these agencies highlights why NASA is the correct answer in relation to laser regulation.