From left, Airman 1st Class Joshua Nichols and Senior Airman Christian Dungca, both 436th Security Forces Squadron response force members, walk around the 436th Medical Group clinic, portraying active shooters during Exercise DORMAR Nov. 12, 2019, at Dover Air Force Base, Del. Base first responders and personnel worked through numerous scenarios, ensuring the safety of base personnel and assets. (U.S. Air Force photo by Roland Balik)