 It is littered with subtle references to British cold war propaganda films, such as the infamous Protect and Survive series.The video subtly refers to the rising and falling note of the air attack sirens in the opening shots, which was the official warning of imminent attack since World War II (The Protect and Survive Public information films, "The Warnings" and "Action After Warnings" illustrate this).A discarded newspaper with the Headline "Four Minute Warning" being blown across the streets refers to Sound An Alarm (1971), a film commissioned by the Home Office's United Kingdom Warning and Monitoring Organisation to illustrate their role.