The United States Commission of Fine Arts (CFA) reviewed the plans on October 21, 1964. GSA and Murphy and Associates had declined to make the FBI building's plans public prior to this meeting. During informal discussions with CFA staff in the initial design phase, the architects learned that the CFA wanted the FBI building to have a powerful base which appeared to anchor it to the earth. Although this was in direct conflict with the open architecture advocated by the President's Council on Pennsylvania Avenue, it was more in line with what the NCPC and FBI wanted. Since it was not clear whether the proposed design that had met with NCPC approval would be accepted by the CFA, the design was confidential so that changes could still be made without the appearance that they had been forced on the architects. The still-incomplete designs unveiled during the CFA meeting now showed a massive, three-story roof deck overhanging the main building on E Street, with glass curtain wall-enclosed walkways connecting the Pennsylvania Avenue building to the 9th and 10th street wings. The trapezoidal interior courtyard was designed to hold sculpture and accommodate public exhibits about the FBI. The façade now exhibited repetitive, angular concrete elements similar to those used by Le Corbusier in the Punjab and Haryana High Court in Chandigarh, India; Paul Rudolph in his Brutalist Yale Art and Architecture Building at Yale University in New Haven, Connecticut; and Gyo Obata in the final design for the National Air and Space Museum in Washington, D.C.