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)". Your task is to determine which category of federal government agencies and activities best describes this litigant.

Opinion:
NATIONAL LABOR RELATIONS BOARD, Petitioner, v. McCLURE ASSOCIATES, INC., Respondent.
No. 76-1964.
United States Court of Appeals, Fourth Circuit.
Argued April 5, 1977.
Decided June 13, 1977.
Lynne Deitch, Washington, D.C. (John H. Ferguson, John S. Irving, Jr., Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Carl L. Taylor, Associate Gen. Counsel and Elliott Moore, Deputy Associate Gen. Counsel, Washington, D.C., on brief), for petitioner.
J. Roy Weathersby and R. Paul Cannon, Atlanta, Ga., for respondent.
Before BRYAN, Senior Circuit Judge, and CRAVEN and WIDENER, Circuit Judges.
Judge Craven concurred in this opinion but died before it was filed.
PER CURIAM.
In this case we enforce an order which required the Company to cease and desist from violation of §§ 8(a)(1) and 8(a)(3) of the Labor Management Relations Act of 1947, 29 U.S.C. §§ 158(a)(1) and 158(a)(3), and for reinstatement and back pay.
The Company (an electrical subcontractor) discharged for lack of work twelve employees, the Company taking the position there was economic justification for their discharge. Assuming that such economic justification for a reduction in force did exist, we yet think there was substantial evidence to support the Board’s finding that the eight of them which concern us here were discharged because of their union activity. Each of the eight, on at least one occasion, had either been threatened with discharge on account of their union activity or interrogated with respect to the same or both; the lead foreman, who was one of the supervisory employees directly involved, did not testify; and the discharges coincided with a union campaign which was known to the Company. Without detailing the facts, we think there was substantial evidence to support the Board’s order.
The Company objects that the Administrative Law judge improperly refused in evidence an affidavit obtained by a Board agent in his investigation from one Winship, project manager of the general contractor, which affidavit would have tended to prove that the general contractor directed the Company to reduce its force. The Board on oral argument takes the position that the affidavit, excluded as hearsay by the Administrative Law judge, was properly so excluded, because it was unreliable and not subject to cross-examination. We agree with the Board. Assuming without deciding that the Federal Rules of Evidence apply to such hearings, the affidavit did not comply with Rule 804(b)(1) of the Federal Rules of Evidence, since it was not a deposition taken in compliance with law in the same or another proceeding; and in addition, although the affidavit was taken by a board agent, there was no opportunity for cross-examination. We also think the affidavit was not admissible under Rule 803(24), for we do not think the affidavit had equivalent circumstantial guarantees of trustworthiness.
ENFORCEMENT GRANTED.

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "federal government (including DC)". Which category of federal government agencies and activities best describes this litigant?

Choices:
cabinet level department
courts or legislative
agency whose first word is "federal"
other agency, beginning with "A" thru "E"
other agency, beginning with "F" thru "N"
other agency, beginning with "O" thru "R"
other agency, beginning with "S" thru "Z"
Distric of Columbia
other, not listed, not able to classify

Answer: 4