Fourteen NATO member countries are taking part in the exercises, which involve around 60 aircraft including fighter jets and surveillance and refueling planes.
As in previous years, US B-52 long-range bombers are taking take part this year.
Training flights are taking place over Belgium, which is hosting the exercise, as well as over the North Sea and the United Kingdom. (ILKHA)
Allied Air Forces are currently exercising nuclear deterrence capabilities involving dozens of aircraft over north-western Europe. #NATO exercise #SteadfastNoon is a routine annual training activity. It involves 14 countries and more than 60 aircraft of various types pic.twitter.com/Q32a6gsEmj