In February 1997, it was revealed the British had a secret plan called Operation Tracer to conceal service men in tunnels beneath the Rock in case the Germans captured it.
I februar 1997 blev det offentlig kendt, at briterne havde en hemmelig plan kaldet operation Tracer, der gik ud på, at man ville holde en gruppe soldater skjult i tunnellerne under klippen, hvis tyskerne skulle besætte den.