 A ban-the-bomb demonstration outside the nearby Fylingdales radar station has been announced and sergeant Blaketon turn down an offer of outside help believing it will only be a small gathering. But matters are complicated by the visit of the American ambassador to the area and the arrival of the prominent activist Paul Melthorn. Melthorn is assaulted at the protesters  camp site on lord Ashfordly s field - courtesy of Claude Greengrass - by troublemakers working at Fylingdales.