F-16s from ‘Triple Nickel’ and 510th train with first European air unit to acquire F-35s February 19 Two U.S. Air Force F-16 Fighting Falcons assigned to the 31st Fighter Wing return from offensive counter air training with two Italian air force F-35 Lightning II assigned to the 32° Stormo during an Agile Combat Employment (ACE) exercise at Amendola Air Base, Italy, Feb. 17, 2021. (U.S. Air Force photo by Senior Airman Ericka A. Woolever) F-16 Fighting Falcons from the “Triple Nickel” and 510th fighter squadrons participated in a training exercise this week with the first air unit in Europe to acquire F-35 Lightning II jets.