It was not immediately clear which countries the U.S. operation would aid or how the operation would work.

The Moroccan army said the service members went missing near a cliff. The incident remains under investigation and the search is ongoing.

The U.S. military-run body tasked with monitoring the Israel-Hamas ceasefire and boosting aid to Gaza is set to be shut down, seven diplomats told Reuters.

The five-day course covers arctic medicine, combat patrolling, cold weather weapons and using snow for cover.