What follows is an opinion from the Supreme Court of the United States. Your task is to identify the federal agency involved in the administrative action that occurred prior to the onset of litigation. If the administrative action occurred in a state agency, respond "State Agency". Do not code the name of the state. The administrative activity may involve an administrative official as well as that of an agency. If two federal agencies are mentioned, consider the one whose action more directly bears on the dispute;otherwise the agency that acted more recently. If a state and federal agency are mentioned, consider the federal agency. Pay particular attention to the material which appears in the summary of the case preceding the Court's opinion and, if necessary, those portions of the prevailing opinion headed by a I or II. Action by an agency official is considered to be administrative action except when such an official acts to enforce criminal law. If an agency or agency official "denies" a "request" that action be taken, such denials are considered agency action. Exclude: a "challenge" to an unapplied agency rule, regulation, etc.; a request for an injunction or a declaratory judgment against agency action which, though anticipated, has not yet occurred; a mere request for an agency to take action when there is no evidence that the agency did so; agency or official action to enforce criminal law; the hiring and firing of political appointees or the procedures whereby public officials are appointed to office; attorney general preclearance actions pertaining to voting; filing fees or nominating petitions required for access to the ballot; actions of courts martial; land condemnation suits and quiet title actions instituted in a court; and federally funded private nonprofit organizations.

Opinion:
FEDERAL POWER COMMISSION v. UNITED GAS PIPE LINE CO.
No. 247.
Decided October 21, 1968.
Solicitor General Griswold, Harris Weinstein, Richard A. Solomon, and Peter H. Schiff for petitioner in No. 247. Reuben Goldberg and George E. Morrow for petitioner in No. 248.
David T. Searls and Vernon W. Woods for respondent in both cases.
Together with No. 248, Memphis Light, Gas & Water Division v. United Gas Pipe Line Co., also on petition for writ of certiorari to the same court.
Per Curiam.
When these cases were here the first time, we sustained the authority of the Federal Power Commission to determine the tax component of United’s cost of service in accordance with the formula developed by it in Cities Service Gas Co., 30 F. P. C. 158 (1963), but remanded the cases with respect to whether in applying the Cities Service formula it was significant that United apparently had both jurisdictional and non jurisdictional activities and income. FPC v. United Gas Pipe Line Co., 386 U. S. 237 (1967). Over the objections of the Commission, the Court of Appeals held that the issue had been sufficiently raised by United in its petition for rehearing before the Commission in accordance with § 19 of the Natural Gas Act, 52 Stat. 831, as amended, 15 U. S. C. § 717r, and that the Cities Service formula required that consolidated return tax savings coming to United be first allocated to United’s non jurisdictional income.
The petitions for certiorari are granted and the judgment of the Court of Appeals is reversed. Although we acquiesce in the Court of Appeals’ construction of United’s petition for rehearing filed with the Commission, the issue on remand was not in the proper posture for final determination by the Court of Appeals and should have been remanded to the Commission for further consideration. It is true that the Commission in its opinion had remarked that “United is largely a regulated company, and we shall designate it as such for the purpose of these computations.” United Gas Pipe Line Co., 31 F. P. C. 1180, 1190 (1964). But the Commission made no effort to justify this characterization of United in terms of the findings, the fundamentals of the Cities Service formula, or the applicable law. This may have been because the adversary proceedings were primarily concerned with the validity of the formula itself and never focused precisely on the question of intra-company revenue and cost allocation. Whatever the reason, there was “no indication of the basis on which the Commission exercised its expert discretion/’ no articulation of “any rational connection between the facts found and the choice made.” Burlington Truck Lines, Inc. v. United States, 371 U. S. 156, 167, 168 (1962). On this issue the Commission’s order was vulnerable on rehearing and in the Court of Appeals.
But it does not follow that the Court of Appeals, in the face of the Commission’s insistence that its decision was wholly consistent with its Cities Service formula, should have itself determined that consolidated return savings be first allocated to non jurisdictional income and that “income from the unregulated component of United is sufficiently large to absorb all such net tax losses and no excess remains to reduce the regulated taxable income of United.” United Gas Pipe Line Co. v. FPC, 388 F. 2d 385, 391-392 (C. A. 5th Cir. 1968) (footnote omitted). These questions should have had adequate attention from the Commission in the first instance before being subjected to judicial review. Before the courts can properly review agency action, the agency must disclose the basis of its order and “give clear indication that it has exercised the discretion with which Congress has empowered it,” Phelps Dodge Corp. v. NLRB, 313 U. S. 177, 197 (1941); otherwise the courts are propelled “into the domain which Congress has set aside exclusively for the administrative agency.” SEC v. Chenery Corp., 332 U. S. 194, 196 (1947). The judgment of the Court of Appeals is reversed and the cases are remanded with instructions to return the cases to the Commission for further proceedings.
It is so ordered.
Mr. Justice Fortas and Mr. Justice Marshall took no part in the consideration or decision of these cases.
The motion for leave to use the record in the prior proceedings before this Court, Nos. 127 and 128, October Term, 1966, is granted.

Question: What is the agency involved in the administrative action?

Choices:
Army and Air Force Exchange Service
Atomic Energy Commission
Secretary or administrative unit or personnel of the U.S. Air Force
Department or Secretary of Agriculture
Alien Property Custodian
Secretary or administrative unit or personnel of the U.S. Army
Board of Immigration Appeals
Bureau of Indian Affairs
Bureau of Prisons
Bonneville Power Administration
Benefits Review Board
Civil Aeronautics Board
Bureau of the Census
Central Intelligence Agency
Commodity Futures Trading Commission
Department or Secretary of Commerce
Comptroller of Currency
Consumer Product Safety Commission
Civil Rights Commission
Civil Service Commission, U.S.
Customs Service or Commissioner or Collector of Customs
Defense Base Closure and REalignment Commission
Drug Enforcement Agency
Department or Secretary of Defense (and Department or Secretary of War)
Department or Secretary of Energy
Department or Secretary of the Interior
Department of Justice or Attorney General
Department or Secretary of State
Department or Secretary of Transportation
Department or Secretary of Education
U.S. Employees' Compensation Commission, or Commissioner
Equal Employment Opportunity Commission
Environmental Protection Agency or Administrator
Federal Aviation Agency or Administration
Federal Bureau of Investigation or Director
Federal Bureau of Prisons
Farm Credit Administration
Federal Communications Commission (including a predecessor, Federal Radio Commission)
Federal Credit Union Administration
Food and Drug Administration
Federal Deposit Insurance Corporation
Federal Energy Administration
Federal Election Commission
Federal Energy Regulatory Commission
Federal Housing Administration
Federal Home Loan Bank Board
Federal Labor Relations Authority
Federal Maritime Board
Federal Maritime Commission
Farmers Home Administration
Federal Parole Board
Federal Power Commission
Federal Railroad Administration
Federal Reserve Board of Governors
Federal Reserve System
Federal Savings and Loan Insurance Corporation
Federal Trade Commission
Federal Works Administration, or Administrator
General Accounting Office
Comptroller General
General Services Administration
Department or Secretary of Health, Education and Welfare
Department or Secretary of Health and Human Services
Department or Secretary of Housing and Urban Development
Administrative agency established under an interstate compact (except for the MTC)
Interstate Commerce Commission
Indian Claims Commission
Immigration and Naturalization Service, or Director of, or District Director of, or Immigration and Naturalization Enforcement
Internal Revenue Service, Collector, Commissioner, or District Director of
Information Security Oversight Office
Department or Secretary of Labor
Loyalty Review Board
Legal Services Corporation
Merit Systems Protection Board
Multistate Tax Commission
National Aeronautics and Space Administration
Secretary or administrative unit or personnel of the U.S. Navy
National Credit Union Administration
National Endowment for the Arts
National Enforcement Commission
National Highway Traffic Safety Administration
National Labor Relations Board, or regional office or officer
National Mediation Board
National Railroad Adjustment Board
Nuclear Regulatory Commission
National Security Agency
Office of Economic Opportunity
Office of Management and Budget
Office of Price Administration, or Price Administrator
Office of Personnel Management
Occupational Safety and Health Administration
Occupational Safety and Health Review Commission
Office of Workers' Compensation Programs
Patent Office, or Commissioner of, or Board of Appeals of
Pay Board (established under the Economic Stabilization Act of 1970)
Pension Benefit Guaranty Corporation
U.S. Public Health Service
Postal Rate Commission
Provider Reimbursement Review Board
Renegotiation Board
Railroad Adjustment Board
Railroad Retirement Board
Subversive Activities Control Board
Small Business Administration
Securities and Exchange Commission
Social Security Administration or Commissioner
Selective Service System
Department or Secretary of the Treasury
Tennessee Valley Authority
United States Forest Service
United States Parole Commission
Postal Service and Post Office, or Postmaster General, or Postmaster
United States Sentencing Commission
Veterans' Administration or Board of Veterans' Appeals
War Production Board
Wage Stabilization Board
State Agency
Unidentifiable
Office of Thrift Supervision
Department of Homeland Security
Board of General Appraisers
Board of Tax Appeals
General Land Office or Commissioners
NO Admin Action
Processing Tax Board of Review

Answer: 51