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, not listed, not able to classify". Your task is to determine which specific federal government agency best describes this litigant.

Opinion:
Lyndon R. CONNETT and John B. Allen, Doing Business as L. R. Connett & Co., Appellees, v. UNITED STATES SHIPPING BOARD EMERGENCY FLEET CORPORATION, Appellant, Tice Towing Line, Appellee.
No. 92.
Circuit Court of Appeals, Second Circuit.
Feb. 3, 1930.
Charles 'H. Tuttle, U. S. Atty., of New York City, and Anthony M. Menkel, Sp. Asst. U. S. Atty., of Brooklyn, N. Y., for appellant.
Park, Mattison & Lynch, of New York City (Henry E. Mattison, of New York City, of counsel), for appellee Tice Towing Line.
Before SWAN, AUGUSTUS N. HAND, and CHASE, Circuit Judges.
PER CURIAM.
In an action at law for damages to plaintiffs' scow, judgment was entered in favor of the plaintiffs against the Pleet Corporation, and the complaint was dismissed against the Tice Towing Line, a judgment for costs in its favor being entered against the plaintiffs. On the authority of Johnson v. U. S. Shipping Board Emergency Fleet Corporation, 50 S. Ct. 118, 74 L. Ed. -, decided January 6, 1930, by the Supreme Court of the United States, the judgment against the Pleet Corporation is reversed, and the cause remanded, with directions to dismiss for lack of jurisdiction. The judgment for costs in favor of Tice Towing Line is affirmed.

Question: This question concerns the first listed appellant. The nature of this litigant falls into the category "federal government (including DC)", specifically "other, not listed, not able to classify". Which specific federal government agency best describes this litigant?

Choices:
United States - in corporate capacity (i.e., as representative of "the people") - in criminal cases
United States - in corporate capacity - civil cases
special wartime agency
Other unlisted federal agency (includes the President of the US)
Unclear or nature not ascertainable

Answer: 2