The first response of all those not directly affected by the attacks is probably to wonder audibly, 'Was it really fifteen years ago? How time flies...' and then embark upon an anecdote of where they were living and what they were doing when the news broke. The antidote is to think of those for whom the memory is still and always will be fresh: those whose lives are filled with reminders either of their own experiences or the absence of a loved one who never came home that day; those whose dreams are haunted by faces that will never again be seen while awake. For all our differences - both superficial and profound - the Americans were and are our friends. They were there when it was down to the Empire Vs the Nazis and they'd be the first to send more than pretty words if catastrophe befell Blighty again. Remember.