Final answer:
In the Air Force, a radioactive materials users' permit is typically issued by the Installation Radiation Safety Officer (RSO).
Step-by-step explanation:
In the Air Force, a radioactive materials users' permit is typically issued by the Installation Radiation Safety Officer (RSO). The RSO is responsible for overseeing the use of radiation and radioactive materials within an organization to ensure compliance with safety standards, regulations, and protocols. The RSO ensures that Air Force personnel are trained and qualified to handle radioactive materials properly and that the materials are used and stored safely to prevent contamination and overexposure to radiation. They have the authority to issue permits for the use of radioactive materials on the installation.
While the Air Force Medical Support Agency/Bioenvironmental Engineering Division may provide oversight and policy, and the Nuclear Regulatory Commission (NRC) and agreement states may regulate civilian use of radioactive materials, the specific task of issuing permits within the Air Force installations falls under the Installation RSO.