CEP Senior Advisor Ian Acheson writes; "The bomb, planted overnight, was detonated by remote control. The terrorists must have known who was on that boat and then have concluded that the party that included Paul, 15, who was a member of the crew, and another teenager (Nicholas Knatchbull, 14) had lives that were worth discarding to get Mountbatten, along with that of his 83-year-old grandmother, Lady Brabourne."