What follows is an opinion from a United States Court of Appeals.
Intervenors who participated as parties at the courts of appeals should be counted as either appellants or respondents when it can be determined whose position they supported. For example, if there were two plaintiffs who lost in district court, appealed, and were joined by four intervenors who also asked the court of appeals to reverse the district court, the number of appellants should be coded as six.
When coding the detailed nature of participants, use your personal knowledge about the participants, if you are completely confident of the accuracy of your knowledge, even if the specific information is not in the opinion. For example, if "IBM" is listed as the appellant it could be classified as "clearly national or international in scope" even if the opinion did not indicate the scope of the business. 

Your task concerns the first listed appellant. The nature of this litigant falls into the category "federal government (including DC)", specifically "other agency, beginning with "F" thru "N"". Your task is to determine which specific federal government agency best describes this litigant.

Opinion:
NATIONAL LABOR RELATIONS BOARD, Petitioner, v. CLEARWATER FINISHING COMPANY, Respondent.
No. 6861.
United States Court of Appeals Fourth Circuit.
Argued Oct. 19, 1954.
Decided Nov. 8, 1954.
Frederick U. Reel, Attorney, National Labor Relations Board, Washington, D. C. (George J. Bott, General Counsel, David P. Findling, Associate General Counsel, A. Norman Somers, Asst. General Counsel, and Melvin Spaeth, Attorney, National Labor Relations Board, Washington, D. C., on brief), for petitioner.
Frank A. Constangy, Atlanta, Ga., for respondent.
Before PARKER, Chief Judge, and SOPER and DOBIE, Circuit Judges.
PER CURIAM.
This is a petition for the enforcement of an- order of the National Labor Relations Board which found that the Clearwater Finishing Company had been guilty of certain unfair labor practices and directed it to cease and desist therefrom and to restore' with back pay three employees found to have been discriminatorily discharged. Enforcement is resisted on the ground that the Board’s findings and order are not sustained by substantial evidence on the whole record. The facts are sufficiently set forth in the Board’s order and the report of the trial examiner and need not be repeated here.- We think that the findings and order are, sustained by substantial evidence on. the whole record except with respect to 'David Timmerman and in that respect we think that it is not so sustained. Timmerman was discharged as the result of an altercation with another employee. That the altercation may. have-arisen because of Tim-merman’s advocacy pf the union does not sustain the position of the Board, since the employer was within its rights in 'forbidding union advocacy during working hours. Who was to' blame in the altercation is, likewise, beside the point, as the employer had the right to discharge Timmerman because of the altercation whether he was to blame or not, so long as this was the real ground of the discharge and not a mere pretext. The evidence gives no substantial support-to the finding that the discharge, which occurred several months after the other discharges found to be discriminatory, was on account of Timmerman’s union membership, and we think that the conclusion to that effect must be condemned as speculative.
The findings and order of the Board will accordingly be modified by eliminating therefrom the findings with respect to Timmerman and the order for his reinstatement; and as so modified it will be enforced.
Modified and enforced.

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "federal government (including DC)", specifically "other agency, beginning with "F" thru "N"". Which specific federal government agency best describes this litigant?

Choices:
Food & Drug Administration
General Services Administration
Government Accounting Office (GAO)
Health Care Financing Administration
Immigration & Naturalization Service (includes border patrol)
Internal Revenue Service (IRS)
Interstate Commerce Commission
Merit Systems Protection Board
National Credit Union Association
National Labor Relations Board
Nuclear Regulatory Commission

Answer: 9