Senior Airman Joshua Carney, 31st Civil Engineer Squadron heavy equipment operator, mixes concrete during a base defense readiness exercise at Aviano Air Base, Italy, April 12, 2021. During the exercise, the 31st CES conducted Rapid Airfield Damage Repair (RADR) on the flightline and performed tasks such as upheaval marking, pavement cutting and excavation. (U.S. Air Force photo by Airman 1st Class Brooke Moeder)