Mayday, entitled Air Crash Investigation in Canada (alternatively known as Air Crash Investigations on Seven Network), New Zealand, South Africa, the United Kingdom (alternatively known as Air Crash: Disaster Revealed on 5Select), India, other Asian countries, and some European countries, and Air Emergency, Air Disasters, and Mayday: Air Disaster in the United States, is a Canadian documentary television program examining air crashes, near-crashes, hijackings, bombings, and other disasters. Mayday uses re-enactments and computer-generated imagery to reconstruct the sequence of events leading up to each disaster. In addition, survivors, aviation experts, retired pilots, and crash investigators are interviewed, to explain how the emergencies came about, how they were investigated, and how th