Mull of Kintyre crash: Memorials mark 20th anniversary of RAF Chinook disaster
2 June 2014 Last updated at 18:29 BST
Memorial services are being held in Northern Ireland and Scotland to mark the 20th anniversary of an RAF air crash in which 29 people died.
A Chinook helicopter carrying 25 of the UK's most senior intelligence experts crashed on the Mull of Kintyre on the west coast of Scotland on 2 June 1994.
BBC News NI Investigation Reporter Kevin Magee visited the memorial.