The US Space Force’s Space Training and Readiness Command (STARCOM) has held its second Black Skies electronic warfare (EW) exercise and is preparing for another this fall, as well as a Red Skies orbital warfare exercise this summer and a Blue Skies cyber warfare exercise next year. The first Black Skies exercise was held in September 2020. The most recent Black Skies exercise was a live simulation involving systems and 42 simulated targets, which spanned the distance between California and Colorado and elevated to a specified point 22,000 miles above the surface of the Earth. The exercise allowed space warfighters to rehearse and refine their warfighting tactics, techniques, and procedures.