This podcast from Transport Security International Magazine examines the various models of aviation security screening used around the world, focusing on the transition from police-led screening to private or semi-privatised models. The author argues that dedicated security screeners, rather than police officers, are better suited for the task due to their specific skillset and focus. The podcast compares the strengths and weaknesses of different models, including the use of government agencies, statutory corporations, and private companies, concluding that a semi-privatised model, where police supervise private screening companies, often provides the most balanced approach. The podcast also highlights the growing importance of human factors in security screening, as technology advances and passenger segmentation becomes more common.