The site will close in the summer
Twenty-two civilian staff at a military site in Cornwall are to lose their jobs after it moves to the United States.
The US Navy is closing the Joint Maritime Facility (JMF), based at RAF St Mawgan and relocating to Virginia.
The operation, staffed by the US Navy, Royal Navy and RAF, was commissioned in 1995 as a base for tracking submarines and watching over the Atlantic.
The move will save the US Navy about £6.5m a year and the Ministry of Defence (MoD) about £4m a year.
A US Navy spokesman said 16 civilian staff employed by the MoD would be offered relocation or redeployment packages and 22 more employees will lose their jobs.
Scott Campbell said: "There will be 38 British staff affected, 16 of those will be redeployed or relocated.
"There are 22 who work in the welfare and recreation department with jobs in gymnasiums and childcare and they unfortunately will need to look for new work."
The closure will happen over the next few months with the final staff leaving late in the summer. All US personnel and about 45 British families are relocating to Virginia.
The RAF, which has been at St Mawgan since World War II, ended its flying operations from the base last December.