How should I pack a PC for air travel to ensure it remains safe and secure during the journey?

When packing a PC for air travel, it is important to use a sturdy and well-padded carrying case or box to protect it from damage. Remove any loose components such as cables and peripherals, and secure the PC tightly to prevent it from shifting during transit. It is also recommended to label the package as fragile and handle with care to alert baggage handlers.