Skyjack, or hijacking, refers to the unlawful seizure of an aircraft by individuals or groups. This act often involves taking control of the plane while it is in flight, posing a significant threat to passengers and crew. Skyjackers may have various motives, including political demands, ransom, or terrorism. The term gained prominence in the late 20th century, with several high-profile incidents capturing global attention. Governments and aviation authorities have since implemented strict security measures to prevent skyjacking, including enhanced screening processes and international cooperation to address the issue effectively.