This year's Arctic Challenge Exercise (ACE 23) is the sixth of its kind which Finland, Norway, and Sweden have hosted together. The Finnish Air Force is responsible for planning and directing the training event that is conducted every second year since 2013.
Information Graphic displaying the participating nations and aircraft taking part in the exercise. (Graphic courtesy of Finnish Air Force)
The Arctic Challenge Exercises is part of the NORDEFCO cooperation between Finland, Norway, Sweden, and Denmark. Their Air Forces regularly carry out combined air combat-related Cross Border Training operated from their home bases.
The purpose was for the three Nordic nations to practice together and across their countries' borders. Since then, the exercise has grown to include even more allied nations. It is a unique opportunity for nations to be practicing across larger training areas and with other aircraft.