Santa is putting the finishing touches on his flight plan for Sunday night and once again he will be counting on members of the U.S. and Canadian militaries to make sure he has a clear path as he departs the North Pole.

The North American Aerospace Defense Command, or NORAD, has the job of helping keep Santa safe as he makes his journey across the world.

They have undertaken the Santa tracking mission since 1955, when a child trying to reach Santa called an unlisted number at the military’s Continental Air Defense Command.

To follow Santa’s journey, visit https://www.noradsanta.org/en/.

Watch Lester Holt’s story to find out more about NORAD’s important Santa mission.