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:
Michael J. MAYERSKY, Appellant, v. Anthony J. CELEBREZZE, Secretary of Health, Education and Welfare, United States of America.
No. 15258.
United States Court of Appeals Third Circuit.
Argued Oct. 19, 1965.
Decided Nov. 2, 1965.
W. J. Krencewicz, Shenandoah, Pa., for appellant.
Merna B. Marshall, Asst. U. S. Atty., Philadelphia, Pa. (Drew J. T. O’Keefe, pj. S. Atty., Sherman L. Cohn, Edward Berlin, Attys., Dept, of Justice, Washington, D. C., on the brief), for appellee.
Before McLAUGHLIN, FORMAN and GANEY Circuit Judges ’
PER CURIAM.
It is conceded here that our decision in Marshall v. Celebrezze, Secretary, etc., 351 F.2d 467 (opinion filed October 4, 1965) governs this appeal. As we said in Marshall, “The order from which this appeal has been taken is interlocutory, not final. It is unappealable. 28 U.S.C. 1291.”
The appeal will be dismissed.

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