Staff Sergeant Thomas McKay MBE (died 17 November 2005), known as "Tam the Gun", was the District Gunner with 105th Regiment Royal Artillery from 1979 until 2005.
During that time, McKay was responsible for the daily firing of the One O'Clock Gun at Edinburgh Castle, becoming the longest-serving holder of the post.
Sergeant McKay was instrumental in setting up the One O'Clock Gun exhibition within the castle, obtaining funding from the National Lottery and Historic Scotland.
[1] The exhibition, initially temporary but now permanent, explains the origins of Edinburgh's time signals, first established in the 1840s by Charles Piazzi Smyth, the Astronomer Royal for Scotland.
[3] McKay also appeared on BBC Scotland's Hogmanay Live programme, firing the gun to mark the New Year.