Final answer:
Formation flight is allowed in aviation under specific conditions, such as military training or air shows. Birds like geese also fly in formation to reduce drag and communicate. Consideration of safety and adherence to regulations is crucial for allowable formation flight.
Step-by-step explanation:
In aviation, formation flight is allowed under specific conditions. It is generally allowed for military aircraft during training exercises or air shows, as well as for civilian aircraft participating in air shows or special events. Formation flight requires highly skilled pilots and strict adherence to safety protocols to prevent collisions.
One example of formation flight in nature is the migratory flight of birds such as geese. They fly in a V-shaped formation, which reduces drag and energy consumption for individual birds and allows for better communication.
Overall, whether it's in aviation or wildlife, formation flight requires careful coordination, adherence to regulations, and consideration of safety to be allowable.