Airman 1st Class Luciano Medrano, 423rd Security Forces Squadron response force leader, scans his perimeter during a force-on-force exercise at RAF Molesworth, United Kingdom, May 21, 2021. Defenders from the 422nd and 423rd SFS came together to train as they responded to multiple scenarios geared towards sharpening their skills in deadly-force situations. (U.S. Air Force photo by Senior Airman Eugene Oliver)