The appellants’ principal contention on appeal is that prior official disclosures by the government about the Glomar Explorer, together with widespread but unofficial reports in the press, suggest both that much of the material still withheld is already in the public domain and that the release of what remains undisclosed would do little additional damage to the national security, if any. The government, on the other hand, contends that in spite of all the publicity the public may still not know even the true purpose of the Glomar Explorer mission, so that release of the withheld documents could pose a serious threat to the national security. The government argues that its affidavits are sufficient to establish that no genuine issues of material fact remain regarding whether the deleted documents are exempt from disclosure under the Freedom of Information Act. This case thus turns on the sufficiency of the government’s affidavits to show that in the name of national security it is entitled to withhold the requested documents. Because these affidavits lqom so large in the decision of this case, throughout this opinion we excerpt liberally from them as we consider their adequacy.
I. HISTORY OF THE CASE
The events which provide the motivation for the requests litigated here under the Freedom of Information Act are intriguing, involving, as they reportedly do, a covert CIA operation costing more than a third of a billion dollars, the billionaire recluse Howard Hughes, a sunken Soviet submarine carrying nuclear weaponry, the theft during a highly professional burglary of documents detailing the mission, and finally, tireless CIA efforts, for a time successful, to obtain the silence of many of the nation’s most prestigious news organizations. For our purposes here, the briefest of summaries of what has been reported by the press — but not officially confirmed by the government — will suffice to provide the background necessary to an understanding of this case.
A. Background
According to reports widely publicized in 1975,1 a Soviet submarine carrying nuclear missiles sunk sometime in 1968 in about three miles of water somewhere northwest of Hawaii. The location of the sunken craft was unknown to the Soviets, who tried unsuccessfully to find the remains. United States Navy sensors, however, managed to pinpoint the submarine’s final resting place and an American electronics ship dispatched to the spot detected, scanned and photographed the sunken vessel.
Because when it went down the submarine took with it torpedoes, nuclear missiles, codes and code machines, communications gear and perhaps other equipment of intense interest to the American military and intelligence services, the Navy approached the CIA to develop the capability necessary to raise the vessel from its underwater grave for analysis by United States experts. The CIA, in turn, went to Hughes, who arranged for the construction of a 36,000-ton floating platform, the Hughes Glomar Explorer, and a huge submersible barge, designated the HMB-1 (an abbreviation for Hughes Mining Barge-1) to accompany it. Together these two vessels were designed to raise the Russian submarine under an elaborate cover story in which the Glomar Explorer's mission was said to be the recovery of manganese nodules from the ocean floor.
In June 1974 the Glomar Explorer and its companion barge sailed to the site of the sunken submarine and attempted to raise it by lowering giant claws to the bottom of the ocean, seizing the ship and winching it to the surface. Unfortunately, weakened by the corrosive influence of the deep and by the mishap that sent it to the bottom, the submarine broke in two about halfway to the surface. Only the forward third was
1
The following summary is based principally on the reports which appeared in The New York Times; CIA Tried to Get Press to Hold Up Salvage Story, N.Y. Times, 20 Mar. 1975, at C31, col. 1, reprinted in Joint Appendix [hereinafter J.A.] at 9, and in Time magazine, The Great Submarine Snatch, Time, 31 Mar. 1975, at 20, reprinted in J.A. at 11.