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  • The National Archives· 13 pages· 4 pages mention it
    • p. 5 …Responsibility was delegated by the Chief of Air Staff to a branch within the Deputy Directorate of Intelligence (DDI (Tech…
    • p. 10 …A report on the incident prepared by DDI (Tech) contains in its conclusions what is possibly the closest the Air…
  • The National Archives· 2011-08· 15 pages· 4 pages mention it
    • p. 5 …Responsibility was delegated by the Chief of Air Staff to a branch within the Deputy Directorate of Intelligence (DDI (Tech…
    • p. 11 …A report on the incident prepared by DDI (Tech) contains in its conclusions what is possibly the closest the Air…
  • The National Archives· 15 pages· 4 pages mention it
    • p. 5 …Responsibility was delegated by the Chief of Air Staff to a branch within the Deputy Directorate of Intelligence (DDI (Tech…
    • p. 11 …A report on the incident prepared by DDI (Tech) contains in its conclusions what is possibly the closest the Air…
  • The National Archives· 15 pages· 4 pages mention it
    • p. 5 …Responsibility was delegated by the Chief of Air Staff to a branch within the Deputy Directorate of Intelligence (DDI (Tech…
    • p. 11 …A report on the incident prepared by DDI (Tech) contains in its conclusions what is possibly the closest the Air…
  • Central Intelligence Agency· 1972-06-01· 243 pages

    …For example, in 1964 the DDI Assessment Panel, which was established to assure Agency production on topics of…

  • The National Archives· 22 pages· 2 pages mention it
    • p. 14 …a sec- tion of the air technical intelligence branch, DDI (Tech). The memoirs of Captain Edward Ruppelt refer to an…
    • p. 18 …Tony 65 Day the Earth Stood Still, The 116 DDI (Tech) 51, 60 Defence Intelligence Staff 70, 75, 81, 93…