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:
Stephen Michael LAMBERT, Petitioner-Appellant, v. The Honorable Paul BROWN, Secretary of the Air Force of the United States of America, Col. Clare T. Ireland, Jr., USAF, Commanding Officer, 62nd MAW, Lt. Col. Robert G. Denson, USAF, Commanding Officer, 621 OMS, Respondents-Appellees.
No. 24594.
United States Court of Appeals, Ninth Circuit.
Nov. 12, 1970.
Michael H. Rosen, Daniel H. Smith, Seattle, Wash, for appellant.
Stan Pitkin, U. S. Atty, Tacoma, Wash, for appellees.
Before HAMLEY and WRIGHT, Circuit Judges, and GOODWIN, District Judge.
Hon. Alfred T. Goodwin, United States District Judge for the District of Oregon, sitting by designation.
PER CURIAM:
Stephen Michael Lambert appeals the dismissal by the district court of his petition for writ of habeas corpus seeking discharge from the United States Air Force as a conscientious objector.
Since noting this appeal, it now appears that appellant has been given a General Discharge from the Air Force and is therefore no longer in the custody of appellees. We are informed that this discharge carries no continuing obligation by way of reserve duty or otherwise and that appellant’s position regarding veteran’s benefits is substantially the same as it would have been had he been granted an Honorable Discharge. Indeed, his position in this regard is markedly better than it would have been had he been granted the discharge he sought as a conscientious objector. See 38 U.S. C. § 3103.
Since we know of no adverse collateral consequences of this discharge, cf. Carafas v. LaVallee, 391 U.S. 234, 88 S.Ct. 1556, 20 L.Ed.2d 554 (1968), it is hereby ordered that this appeal be dismissed as moot.

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: 4