puts them out of the reach of many. The US does not acquiesce to communist demands and the invasion takes place. Two U.S. Army divisions attempt to fight their way into Berlin, but the Russian and East German forces overwhelm them. U.S. President Lyndon B. Johnson authorises the NATO commanders to use their tactical nuclear weapons, and they soon do so. The film remarks that many Soviet strategic IRBMs are believed to be liquid-fueled and stored above ground, making them extremely vulnerable. It hypothesises that the Soviet Union would be obliged to fire all of them in a very early stage of a nuclear exchange to avoid their destruction. On 18 September a doctor, now on the staff of an emergency medical aid unit, pays a house call to a family in Canterbury, Kent, along with two civil defence workers. At 9:13 am the air-raid sirens start to wail in the distance, followed by a klaxon horn from a police car. The family and visitors frantically try to move furniture into a makeshift shelter. At 9:16 am a one-megaton Soviet thermonuclear warhead overshoots Manston Airfield, 12 miles away, and airbursts six miles away. One of the defence workers is bringing a boy in from the yard, and both are struck by the heat wave at a distance to cause third-degree burns, and "melting of the upturned eyeball." The people inside frantically try to put out the fires until the shock front hits. 27 miles away, seeing the explosion gives a small child severe retinal burns. His father scoops him up and the family hide under a table as their house trembles from the blast wave, then the one from Gatwick Airport, Sussex, 41 miles away. Rochester burns from a missile that exploded off-course on its way to London Airport. Firemen take severe casualties from the >100 mph winds of the firestorm. As the firestorm's center rises to 800 °C, and it consumes oxygen and replaces it with methane, carbon monoxide, and carbon dioxide, responders and civilians alike collapse from heat stroke and the gases and die where they stood. By 10:47 am, British V-bombers near Russia's border inflict the same on its people. Armed police shoot victims who have been triaged and assigned to be left to die. PTSD and other conditions are widespread, and the police and British Army lose several of their number to the strain. In Kent,