Final answer:
Emergency jettison is carried out by pressing the EMERG JETT button with the guard closed or using force. It's used in aviation to release payload rapidly in emergencies and is crucial for flight safety.
Step-by-step explanation:
Emergency jettison is performed by pushing the EMERG JETT button with either the guard closed or with force.
In aviation, emergency jettison refers to the quick release of external stores from an aircraft in situations where the pilot feels the need to get rid of the payload immediately for safety reasons, such as in case of an emergency or to improve the maneuverability and performance of the aircraft. It is a critical function in military aviation, but can also be found in some civilian applications. The EMERG JETT is designed to be easily accessible and operable in high-stress situations, emphasizing the importance of pilots being familiar with their aircraft's emergency systems.