Any executive department as defined in section 101 of title 5, U.S. Code, a military department as defined in section 102 of title 5, U.S. Code, the Atomic Energy Commission, the Board of Governors of the Federal Reserve System, the China Trade Act registrar appointed under 53 Stat. 1432 (15 U.S.C. sec. 143), the Civil Aeronautics Board, the Commodity Futures Trading Commission, the Federal Communications Commission, the Federal Deposit Insurance Corporation, the Federal Maritime Commission, the Federal Power Commission, the Federal Trade Commission, the Interstate Commerce Commission, the National Labor Relations Board, the National Transportation Safety Board, the Railroad Retirement Board, an arbitration board established under 48 Stat. 1193 (45 U.S.C. sec. 157), the Securities and Exchange Commission, the Subversive Activities Control Board, or a board established under 49 Stat. 31 (15 U.S.C. sec. 715d). 18 U.S.C.