Acting NASA Administrator and Transportation Secretary Sean Duffy has called on the U.S. to "move quickly" to establish nuclear reactors on the moon, citing both space exploration and national security goals. In a directive obtained by ABC News, Duffy emphasizes the importance of fission surface power (FSP) — a reliable, high-powered energy source capable of sustaining operations through the moon's harsh two-week-long nights. He warns that the U.S. must act before foreign powers gain an upper hand in extraterrestrial energy infrastructure, with future implications for missions to Mars and beyond.