Finland’s largest air exercise, Protective Fence 25, is currently in full swing, marking a significant moment in Nordic defence collaboration. With a total of 50 aircraft and 1,200 military personnel from Finland, Sweden, and Denmark, the exercise is designed to enhance joint defence capabilities and readiness across the region. The participating nations are honing their operational synergy as they face a complex array of simulated combat scenarios in the skies over Finland and surrounding areas.
Sweden’s Active Role in Protective Fence 25
The Swedish Air Force is playing a crucial role in the ongoing exercise, with JAS 39 Gripen fighter jets and C-130 Hercules transport aircraft deployed for operations. Protective Fence 25 takes place across a wide training area, covering key locations in Finland such as Rovaniemi, Kajana, Kuopio, Jyväskylä, and Vaasa, as well as parts of the Gulf of Bothnia. According to the head of Sweden’s F 21, Peter Greberg, the Swedish Air Force’s involvement is central to the exercise’s objectives.
“We carry out the battle itself and provide air support,” Greberg explains, underlining Sweden’s commitment to the exercise’s success. The exercise is not just about skill-building; it is about forging deeper ties between the Nordic air forces and enhancing their ability to operate seamlessly together in any given situation.
An Integrated Partnership Between Finland and Sweden
The Swedish Air Force’s integration with the Finnish Air Force is a cornerstone of the exercise. “Cooperation with Finland is something that has been deepened over many years,” Greberg continues. “In practice, the Swedish air forces are fully integrated with the Finnish Air Force’s operational procedures.” This level of interoperability allows for a smooth exchange of tactics, resources, and intelligence, ensuring that both nations can respond more effectively to regional security challenges.
As part of the exercise, the Kallax Air Base in Luleå, Sweden, is also being used, along with Finland’s primary air bases. This demonstrates the extent of the operational partnership between the two nations, ensuring that all forces are coordinated and able to launch from strategic locations.

Simulating Combat: A High-Intensity Exercise
One of the highlights of Protective Fence 25 is the incorporation of both low-altitude and supersonic flights, with aircraft soaring to altitudes of at least 10 kilometres. This includes high-intensity manoeuvres and air-to-air combat training, which are essential for enhancing the skills required in real-world defence scenarios.
The exercise also incorporates advanced self-protection systems for the aircraft, with flares and strips being deployed as part of the flight operations. These flares, which appear as bright lights in the sky, and radar strips, which create distinctive echoes, serve as critical components of the aircraft’s defence mechanisms. The use of these systems also adds an extra layer of realism, simulating the complex, high-stakes environment in which air forces might operate in a real-world combat situation.
The Ultimate Goal: Strengthened Defence Capabilities
The core aim of Protective Fence 25 is to bolster the defence capabilities of the Swedish Air Force and its partners. As geopolitical tensions continue to shape the security landscape of the Nordic and Baltic regions, joint military exercises like this one are essential for maintaining and enhancing the readiness of air forces to respond to potential threats.
By conducting high-level joint exercises, the participating nations ensure that their forces are not only prepared for the complexities of modern warfare but also capable of operating in unison should the need arise. This collaboration sends a powerful message of strength and unity within the Nordic defence community.
Looking Ahead: A Stronger Nordic Defence
As the skies above Finland continue to light up with flares and echoes of high-speed jets, Protective Fence 25 serves as a reminder of the growing importance of regional defence cooperation. Sweden’s participation in this large-scale exercise further cements its role as a key player in the Nordic defence ecosystem. With increased integration and shared operational goals, the Swedish and Finnish air forces are setting the standard for what is possible when nations work together to safeguard their airspace and security.
This exercise represents not just a military drill, but a crucial step toward creating a more secure and resilient Nordic region, prepared to face the challenges of the future.
Note: The exercise is ongoing, and additional updates may be available following its conclusion.
