U.S. Airmen from the 31st Fighter Wing perform a code blue drill on a mannequin during an exercise at Aviano Air Base, Italy, April 12, 2021. Cardiac or respiratory arrest drills, known as code blue, are performed on mannequins to ensure proper readiness in the event of real-world, medical emergencies. (U.S. Air Force photo by Senior Airman Ericka A. Woolever)