Republican presidential nominee Donald Trump said on Monday that if he wins back the presidency this fall, he will create a new reserve component for the U.S. Space Force.

Trump made the remarks while speaking at the National Guard Association of the United States conference in Detroit about national security issues.

“One of my proudest achievements in my first term was to create Space Force, the first new branch of the Armed Forces in over 70 years,” he said. “Now that Space Force is up and running, I agree with your leadership … that the time has come to create a Space National Guard as the primary combat reserve of the U.S. Space Force.”

“As president, I will sign historic legislation creating a Space National Guard into law,” he continued.