>Air Defender 23 is the largest deployment exercise of air forces since NATO was founded. It demonstrates solidarity in the alliance and transatlantic solidarity: From June 12 to 23, up to 10,000 exercise participants from 25 nations with 250 aircraft will train air operations in European airspace under the command of the German Air Force.
[https://www.bundeswehr.de/de/organisation/luftwaffe/team-luftwaffe-auf-uebung/air-defender-23-](https://www.bundeswehr.de/de/organisation/luftwaffe/team-luftwaffe-auf-uebung/air-defender-23-)
The general of the German Air Force assures that there will be hardly any interference with civil airspace.
BUT
the Gewerkschaft der Flugsicherung (union for air traffic control) expects at least 50,000 minutes of total delays per day.
[https://www.gdf.de/index.php/de/presse-info/pressemitteilungen/663-pressemitteilung-vom-25-05-2023](https://www.gdf.de/index.php/de/presse-info/pressemitteilungen/663-pressemitteilung-vom-25-05-2023)
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And, of course, expect significantly more noise disturbance in the areas in question from military aircraft during that time.