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233 3378 13th Jtme 19?? A» you know, the Cabinet Office Briefing Room was manned on Jubilee Day which meant that your television eemire had to b« activated. I an sure this seriously inconvenienced the technicians who urera oslled in but I would lik« then to know that the Home Secretary and all others involved were very glad to he able to receive S « M bulletin* and up to date reports am the situation developed. Perhaps you would pass on a message of appreciation to Chief Teohnioian Brigga, Sergeant Welleri Corporals Wright and SIeath and Junior Teohnioian Farrli for their help, and our regrets thai their Jubilee plane should have been so disturbed* CLI78 HC8B Commander R H Jaokson, RN, Controller, Defence Situation Centre, Ministry of Defenoe, Main Building,