U.S. Air Force Airman 1st Class Christian Cardwell, 422nd Security Forces Squadron response force member, shines a flashlight during a recall exercise at RAF Croughton, England, November 21, 2019. Quarterly recall exercises are a form of readiness for defenders to always be prepared to respond at a moment’s notice. (U.S. Air Force photo by Airman 1st Class Jennifer Zima)