U.S. Air Force Airman 1st Class Trent Due, 1st Air and Space Communications Operations Squadron collateral systems administrator, demonstrates operating and maintaining the Global Command and Control System (GCCS) at the 1st ACOS GCCS Work Center at Ramstein Air Base, Germany, July 16, 2021. The 1st ACOS uses mechanisms such as the GCCS to monitor, transmit, and communicate missile defense data. (U.S. Air Force photo by Senior Airman Andrew J. Alvarado)