Countdown is a collaborative photographic and video installation. In this work we focus on the perceived threat of nuclear attack using images of the deserted former Royal Air Force operations block at Saxa Vord in Shetland, which was part of NATO's Early Warning System in northern and Arctic communities during the Cold War. The title is a play on the much derided "Four Minute Warning" which was a public alert system conceived by the British Government during the Cold War. The name is derived from the length of time it would take for a Soviet nuclear missile attack against the United Kingdom to be confirmed until the impact of the missiles on their targets.