Airman 1st Class David Carregosa, 436th Security Forces Squadron response force member, stands guard at the main gate during a Force Protection Major Accident Exercise at Dover Air Force Base, Delaware, Oct. 7, 2021. The three-day exercise tested the response capabilities of Team Dover through various scenarios in an effort to strengthen their ability to provide rapid global mobility in challenging conditions. (U.S. Air Force photo by Senior Airman Faith Schaefer)