What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court).

Opinion:
UNITED STATES of America, Appellant and CrossAppellee, v. MASSACHUSETTS TRUSTEES OF EASTERN GAS AND FUEL ASSOCIATES, MYSTIC STEAMSHIP DIVISION, Appellee and Cross-Appellant.
No. 9533.
United States Court of Appeals Fourth Circuit
Argued Nov. 12, 1964.
Decided Feb. 1, 1965.
Alan Raywid, Atty., Dept, of Justice (John W. Douglas, Asst. Atty. Gen., Morton Hollander and Lawrence F. Ledebur, Attys., Dept, of Justice, and Claude V. Spratley, Jr., Norfolk, Va., on brief), for appellant and cross-appellee.
R. M. Hughes, III, and Charles R. Dalton, Jr., Norfolk, Va. (Seawell, McCoy, Winston & Dalton, Norfolk, Va., on brief), for appellee and cross-appellant.
Before SOBELOFF, Chief Judge, and HAYNSWORTH and J. SPENCER BELL, Circuit Judges.
PER CURIAM.
This is an appeal and a protective cross-appeal from decrees entered by the district court in consolidated admiralty actions arising out of a ship collision in international waters off the Virginia coast. The opinion of the district court is reported at 224 F.Supp. 705 (E.D.Va. 1963). In that opinion, the district court carefully analyzed the evidence and found the facts. We think its factual findings are fully supported by substantial evidence in the record. Further, we think the court below correctly applied the pertinent law. Since the district court opinion fully discusses and we think properly applies the precedents to the issues raised on this appeal, we see nothing to be gained from further elaboration. The decrees are
Affirmed.

Question: What is the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court)?

Choices:
Trial (either jury or bench trial)
Injunction or denial of injunction or stay of injunction
Summary judgment or denial of summary judgment
Guilty plea or denial of motion to withdraw plea
Dismissal (include dismissal of petition for habeas corpus)
Appeals of post judgment orders (e.g., attorneys' fees, costs, damages, JNOV - judgment nothwithstanding the verdict)
Appeal of post settlement orders
Not a final judgment: interlocutory appeal
Not a final judgment: mandamus
Other (e.g., pre-trial orders, rulings on motions, directed verdicts) or could not determine nature of final judgment
Does not fit any of the above categories, but opinion mentions a "trial judge"
Not applicable (e.g., decision below was by a federal administrative agency, tax court)

Answer: 0