RAF Fylingdales dates back to the 1960s (Picture: MOD).
RAF Fylingdales might not be one of the most well-known Royal Air Force stations but its role in keeping the UK safe is vital.
Based in North Yorkshire, the site and its 350 staff provide a continuous ballistic missile early warning service to the UK and US, monitoring the world's airspace.
It is one of three radar sites making up the Ballistic Missile Early Warning System (BMEWS) - the other two are in Alaska and Greenland.
Watch: Forces News visited RAF Fylingdales in 2013 to find out more about how it operates
Fylingdales communicates and shares information with the two other sites, before it is passed on to the UK and US governments.
In the case of spotting a ballistic missile, personnel at the station have to check their systems are working and inform the authorities within 60 seconds.
RAF Fylingdales became operational in 1963.
Back then, it was home to three huge iconic 'golf balls' which housed its radar.
In 1992, a Solid State Phased Array Radar system at Fylingdales was declared operational to replace the golf balls.
The radar is made up of thousands of transmit-and-receive diodes positioned on either side of the building.
Individually, each diode has the power of a microwave oven and operators can direct the beam of radar wherever they want.
RAF Fylingdales' secondary role is to monitor and track thousands of objects in space.
Seventeen thousand man-made objects orbit the earth at around 17,500 miles per hour and a crash in space could cause serious damage to British infrastructure.
Mobile phone services, television, the internet are just a number of things that rely on satellites in space and an incident involving one of them could cause major disruption.
Meanwhile, any object re-entering Earth's atmosphere could also cause problems.
RAF Fylingdales' role in monitoring space comes as the UK begins to branch its military out into the atmosphere above.
In July 2019, then-Defence Secretary Penny Mordaunt announced a £30m investment to launch a "small satellite demonstrator", designed to feed high-resolution video into the cockpit of a fighter jet.
It was also confirmed that the UK would become the first partner to join a US-led international coalition to deter hostile actors in space.
Making the announcement, Ms Mordaunt said "science fiction is becoming science fact" and that "the sky is no longer the limit".
The US, among other nations, is also expanding its military space programme.
The UK is also looking to strengthen its satellite radar capability - in July this year, the MOD applied for extra radar shelters at RAF Menwith Hill.
The site, like Fylingdales, provides communications and intelligence support services to the UK and the United States.
The MOD's planning application proposed three more golf ball structures (also known as radomes) in addition to the 34 already at the station.