COPY CONFIDENTIAL British Joint Services Mission Offices of the Combined Chiefs of Staff Washington JIC (W) 499 20th May, 1949. Downgrading and Declassification of Documents We are receiving almost daily requests from various U.S. security agencies for the downgrading or declassification of numerous reports on a wide variety of subjects including those which are of combined or joint interest. The Americans employ full-time staffs who make a continuous review of classified documents and adhere fairly strictly to the combined agreement which exists between themselves and the British (see para 17 of Enclosure "A" to C.C.S.