The US Marine Corps will extend its training and exercise rotation in Norway through 2018, the Norwegian defense minister said this week.

“We are pleased to announce that following an initial evaluation of the limited trial-period we are extending the USMC rotational presence for another year,” Norwegian Defense Minister Ine Eriksen Søreide announced on Wednesday.

About 330 Marines have been in Vaernes in central Norway since January 2017, where they’ve trained with Norwegian and other partner forces for cold-weather operations.

They are scheduled to be replaced by another Marine contingent later this year.