Contract Operational Readiness Exercise 21
U.S. Army Soldiers demonstrate how to properly wear personal protective gear during the Contract Operational Readiness Exercise 21 (CORE-21) on Camp Bullis in San Antonio, Texas on April 20, 2021. CORE-21 is a culminating event that prepares Soldiers set to deploy within the upcoming months. (U.S. Army photo by Spc. Larissa Peterson).