Ronald Clifford Spencer

Son of Harold and Catherine Spencer of Montreal, Quebec. Husband of Gloria Carlo Spencer of Trenton, Ontario. Father of Peter and Ronda Spencer of Greenwood, Nova Scotia. Brother of Gail, Richard, Robert and Allen Spencer.

He was one of nine Canadian Forces personnel killed on United Nations Flight 51 on August 9, 1974. Their Canadian Forces Buffalo, 115461, was on a scheduled supply flight from Ismailia, Egypt, via Beirut, Lebanon, to Damascus, Syria. Shortly after crossing the Lebanese-Syrian border into Syria, three surface-to-air missiles were fired at the Buffalo by Syrian forces, destroying the aircraft and causing the deaths of all aboard.

When Flight 51 was destroyed, it resulted in the largest single-incident loss of life in the history of Canadian peacekeeping operations.

The men who died that day are commemorated in the 7th Book of Remembrance in the Peace Tower, on the Memorial Wall at Peacekeepers Park in Calgary, Alberta, and on a monument at Buffalo Park, also in Calgary.

The Parliament of Canada proclaimed that: "Throughout Canada, in each and every year, the ninth of August shall be known as National Peacekeepers' Day". The proclamation received Royal Assent on June 18, 2008.

Volunteers at the Canadian Warplane Heritage Museum at Hamilton, Ontario, restored the derelict airframe of a Buffalo, in United Nations livery, as a tribute to all Canadian peacekeepers and the crew and passengers of the last flight of Buffalo 461. It was dedicated on National Peacekeepers' Day, August 9, 2009, the 35th anniversary of the loss of Buffalo 115461.