Which type of airspace can exist both temporarily and during specific events like a Super Bowl?

The correct answer is Temporary Flight Restrictions (TFR). TFRs are established by the Federal Aviation Administration (FAA) to restrict air traffic in a specific area for a limited period of time, particularly during special events or emergencies. For instance, during high-profile events such as the Super Bowl, a TFR may be implemented to enhance security and ensure the safety of both the event and aviation operations. This temporary airspace measure allows for protection of the event by preventing unauthorized aircraft from operating in the vicinity.

TFRs are distinct in their purpose, as they are designed specifically for situations that require immediate restrictions, making them a critical tool for event management and airspace security. Other types of airspace, like Class E and Class G, generally relate to standard definitions of air traffic control and do not have the same temporary and event-specific attributes. An Air Defense Identification Zone (ADIZ) serves a different function by identifying areas for air defense purposes rather than being linked to specific events or temporary conditions.