U. S. Space Force Spec. Alejandro Lopez II, 16th Electromagnetic Warfare Squadron, trains Colombian Air Force partners on the Multi-band Assessment of the Communication Environment (MACE) system as part of Operation Thundergun Express, a 21-day space deployment exercise nested under Resolute Sentinel 23. MACE is a rapidly-deployable, cost-effective, user friendly spectrum analysis and monitoring tool that was key in demonstrating space Agile Combat Employment capabilities during the exercise. (U. S. Air Force Photo by Staff Sgt. Matthew Matlock)