U.S. Space Force Col. Richard Bourquin, Space Delta 4 commander, signs his name on a DEL 4 emblem at Cavalier Air Force Station, N.D., Feb. 22, 2021. The 10th Space Warning Squadron has a tradition of immortalizing all the members that visit or work at the station. (U.S. Space Force photo by Airman 1st Class Andrew Garavito)