Which of the following is NOT a type of special use airspace?

The Terminal Radar Service Area (TRSA) is not classified as a type of special use airspace. Instead, it is designed to provide radar service to VFR aircraft operating in designated regions around busy airports. The purpose of a TRSA is to enhance safety and efficiency in the airspace system, particularly where high levels of traffic are present, but it does not impose restrictions on airspace use like the other types of special use airspace do.

In contrast, a Controlled Firing Area is established to ensure safety when military, testing, or other types of firing operations are taking place, but it does not present a restriction to flight as activities are suspended when aircraft are detected. Military Operations Areas (MOAs) are established to segregate military training from civilian air traffic. Prohibited Areas restrict flight operations entirely for national security reasons or to protect sensitive facilities. These airspace classifications are specifically created to manage and restrict activities to ensure safety and security, differentiating them distinctly from the broader purpose of a TRSA.