Members of the search fire and rescue team, assigned to the Marine Corps Chemical Biological Incident Response Force train during exercise Sudden Response 23 at Fort Hood, Texas Dec. 11, 2022. Military units comprising the Defense CBRN Response Force (DCRF) participated in Exercise Sudden Response on 23 Dec. 7-13 in Camp Mabry, Austin, and Fort Hood, Texas. Teams from Task Force (TF) Aviation, TF Logistics, TF Medical, and TF Operations, rehearsed force and equipment employment, life-saving operations, and web-based collaborative tools to ensure their ability to execute the Defense Support of Civil Authority (DSCA) mission. The DCRF is comprised of up to 5,200 personnel from military units located throughout the nation who come together to help fellow Americans in the event of a catastrophic crisis response. (U.S. Marine Corps Video by Cpl. Oneg Plisner)