RAF leader sought evidence of Highland Sputnik crash
David "Heavy" Whalley was intrigued by a story from the 1960s that a shepherd found the remains of a Sputnik on a moor above Ardgay in Sutherland.
An RAF Kinloss Mountain Rescue Team member sent to the scene later told Mr Whalley of finding unusual debris.
Team members involved were allegedly told to "keep quiet" about it.
After becoming Kinloss's rescue team leader in the late 1980s, Mr Whalley tried to find a record of the search in the team's logs. He believes the information was deliberately suppressed.