Members of the 645th Cyberspace Squadron participate in Cosmic Chimera, a weeklong joint cyber defense exercise with the 33rd Range Squadron and U.S. Navy cyber defense teams at Patrick Space Force Base, Florida, Aug. 26, 2026. The exercise used the Cyber Defensive Environment Representation, or CyDER, range to provide realistic red- and blue-team training while strengthening joint cyber defense capabilities supporting Space Launch Delta 45’s launch mission. (U.S. Space Force photo by Gwendolyn Kurzen)