Video footage of a near miss between two RAF aircraft has been uploaded on to YouTube.
The footage, which shows a cockpit view of one aircraft as it is involved in a near miss with another, was posted three months ago.
The two aircraft involved in the incident are believed to be a Tornado jet and a Tucano trainer aircraft.
The MoD have acknowledged the video is authentic and are trying to establish when and where the event happened.
BBC news, updated at 13:13 GMT, Monday, 16 February 2009
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