The United States is to reduce the number of military and civilians serving at an RAF station in North Yorkshire.
US European Command confirmed it would cut 500 posts at RAF Menwith Hill, near Harrogate, by October 2016. The base currently employs about 2,200 military and civilian personnel.
The Ministry of Defence (MoD) said the number of British civilians employed at the base would also be reduced but would not confirm by how many. About two-thirds of those employed at the base, whose primary role is to provide intelligence support, are US nationals.
The MoD said local MPs and trade unions had been advised of the decision, and that operations at the base would not be affected by the US decision to reduce personnel.