President Donald Trump plans to announce this afternoon that the U.S. Space Command will move from Colorado to Huntsville Alabama.

President Donald Trump is expected to announce at a press conference this afternoon that he is reviving a plan to permanently base Space Command in Huntsville, Alabama with the defense media website saying the event is a “U.S. Space Command HQ Announcement.”

Space Command’s functions include conducting operations like enabling satellite-based navigation and troop communication and providing warning of missile launches.

Huntsville, Alabama, nicknamed Rocket City, has long been home to the Army’s Redstone Arsenal and NASA’s Marshall Space Flight Center. The Army’s Space and Missile Defense Command is also located in Huntsville, which drew its nickname because of its role in building the first rockets for the U.S. space program.