Vice President Pence announced on Friday that Space Force members would be called Guardians. Not Sailors, Soldiers, Airmen, or Marines, but Guardians.

“Soldiers, sailors, airmen, Marines, and Guardians will be defending our nation for generations to come,” Pence said during a ceremony to commemorate the Space Force’s first birthday that is coming up on December 20.

The official memorandum from General John Raymond, the new branch’s head, and Chief Msgt. Roger Towberman, its senior enlisted advisor, states that the Guardians is a name with a long history in space operations. It traces its lineage to 1983 and the original command motto of Air Force Space Command, “Guardians of the High Frontier.”

“The name Guardians connects our proud heritage and culture to the important mission you execute  24/7, protecting the United States and its allies’ people and interests,” the memorandum added.