 The "Rivet Chip" and "Rivet Slice" aircraft have been used by NASA in support of various research programs.NASA first provided funding to modify and operate RB-57F 63-13501 to support the Earth Resources Satellite Program, with modifications taking place at Fort Worth between 26 September 1968 and 14 July 1969 as Project "Rivet Rap".Flying as NASA 925 and known as "ESA (Earth Survey Aircraft) No.