This is the report by William McNeilly about hazards and slovenly conduct on British Trident submarines. In May 2015 he sacrificed his career, maybe more, to write it. Another ex Navy officer, Euan Bryson, said McNeilly's concerns about security "rang true from my experience". For more about nuclear near catastrophes, see e.g. Eric Schlosser: Command And Control. Allen Lane/Penguin, 2013.