The periodic Air Shield 2020 exercise for managing threats in the Chemical, Biological, Radiological and Nuclear sector has concluded at the Air Operations Command. The final phase of the exercise concluded in recent days at the Air Operations Command (COA) in Poggio Renatico (FE). Air Shield 2020, Periodic exercise of the CBRN (Chemical, Biological, Radiological, Nuclear) sector, which allows to verify the levels of readiness, predispositions and to test the intervention procedures of the units from the different participating nations, within specific simulated scenarios.