He also served as staff director of the House Subcommittee on Intelligence Oversight from 1977 to 1979 .
Johnson was special assistant to the chair of the Senate Select Committee House Subcommittee on Intelligence from 1975 to 1976 .
Johnson also served as staff director of the House Subcommittee on Intelligence Oversight from 1977 to 1979 .
Johnson was special assistant to the chair of the Senate Select Committee House Subcommittee on Intelligence from 1975 to 1976 .