The move is being prompted by the closure of the USAF's Mildenhall base in 2022 and issues with the runway at RAF Waddington being too short for the RC-135.
The MoD has around 10,000 sailors, soldiers and air personnel living permanently in Scotland, supported by 8,000 reservists and civilians.
The British Armed Forces have seen a sustained drop in fully trained regular forces, with the British Army falling the furthest short of their strength target.
Defence Police Federation chairman Eamon Keating has warned that cuts have jeopardised security at the Faslane and other MoD sites.
Air Chief Marshal Sir Stuart Peach, Chief of the Defence Staff, warned that Britain must 'evolve, modernise and adapt' to cope with budget cuts.
Newly appointed Defence Secretary Gavin Williamson was hosting his US counterpart in London for a bilateral meeting where they discussed the relationship between the two countries on defence.
US Defence Secretary Mattis has said the US and UK stand together against the increasing threat from North Korea.
Minister for the Armed Forces Mark Lancaster has arrived in Gibraltar and outlined his governments support for the territory.
New figures from the Office of National Statistics reveal the contribution veterans make to the economy and society, challenging many misconceptions.
Former Royal Navy chief Lord West has demanded Whitehall increases its spending on defence, highlighting the recent NAO report.
