The NATO detachment will operate from Lithuania with three E-3A aircraft over several weeks, conducting air and maritime surveillance missions across the Baltic region. This presence ensures sustained strategic awareness and operational continuity within NATO’s enhanced vigilance activities, which have become a central component of its forward deterrence posture. By delivering persistent radar coverage and transmitting real-time information to command centers, these missions strengthen situational understanding, multinational coordination, and the freedom of action of Allied air forces deployed in the area.
The E-3A Sentry, commonly known as AWACS, is an airborne early warning and control aircraft developed from the Boeing 707 by Boeing Defense, Space & Security. It is equipped with an AN/APY-1 or AN/APY-2 radar housed in a 9.1-meter rotating dome mounted on the fuselage, enabling 360-degree detection of aerial and maritime targets at ranges exceeding 400 kilometers. Its radar data processing systems allow for the simultaneous tracking of numerous targets and coordination with interceptor aircraft, maritime patrols, or strike platforms. In service since 1977, the E-3A is used by several air forces, including the United States, NATO, France, and Saudi Arabia, and remains a key capability in modern airborne command and control operations.
The E-3A is unarmed, with its primary role focused on advanced surveillance, joint coordination, battlespace management, and communications relay. Capable of long-duration missions—over eight hours without refueling and up to eleven hours for versions fitted with CFM56 engines—the aircraft’s endurance can be further extended through aerial refueling. It plays a critical role in air policing, support to special operations, counterterrorism coordination, strike management, and evacuation planning, having been deployed in all major operational theaters since the Gulf War, including the Balkans, Afghanistan, and Libya. Its ability to deliver wide-area strategic situational awareness makes it essential to NATO’s integrated operations.
This deployment also supports NATO’s Agile Combat Employment (ACE) concept, which aims to improve the dispersal, resilience, and responsiveness of Allied air forces. The ACE framework promotes the flexible use of forward bases, often located near areas of tension, enabling decentralized air operations while maintaining continuity in contested or unstable environments. From Šiauliai, AWACS crews conduct rapid deployment training in complex operational scenarios while strengthening interoperability with Lithuanian host structures, further reinforcing cooperation and mutual support within the Alliance.
Recognized as NATO’s airborne surveillance core, the E-3A remains a cornerstone of the Alliance’s command and control system. Its long-range detection and real-time data transmission capabilities directly contribute to the planning and execution of joint operations. It is also designed to operate in contested electromagnetic environments, supported by countermeasure systems and ongoing modernization efforts, such as the Radar System Improvement Program (RSIP) and the Final Lifetime Extension Program (FLEP), which aim to maintain the fleet’s effectiveness until its planned replacement around 2035 by the Alliance Future Surveillance and Control (AFSC) program.
The presence of NATO AWACS aircraft in Šiauliai reflects the Alliance’s intention to sustain a high level of operational readiness on its eastern flank. Regularly used for Baltic Air Policing missions, the Lithuanian base provides critical infrastructure to host advanced Allied capabilities. It plays a strategic role in supporting collective defense in northeastern Europe and reinforces NATO’s deterrence posture in a security environment increasingly shaped by Russian military activity in the Baltic Sea and around the Suwałki corridor.
The deployment of E-3A aircraft to Lithuania illustrates NATO’s capacity to adapt to evolving strategic challenges while reaffirming its commitment to protecting Euro-Atlantic airspace. By combining advanced technologies, agile operational concepts, and strengthened cooperation with host nations, the Alliance continues to evolve its defense posture to address current security demands. This strategic presence, based on mobility, endurance, and multinational integration, forms a critical component of NATO’s collective deterrence and defense framework in Europe.