26. February 2026

Lockheed Martin Unveils First Sentinel A4 Radar System As Program Turns Corner

Lockheed Martin Delivers First Sentinel A4 Radar from LRIP 2, Nears Full-Rate Production

The delivery of the first Sentinel A4 radar system from Lockheed Martin’s Low-Rate Initial Production (LRIP) 2 to the U.S. Army marks a significant milestone in the program, accelerating its progress toward full-rate production. This achievement comes after years of development and testing, showcasing the company’s commitment to delivering cutting-edge defense technology to support the warfighter.

According to Rick Cordaro, vice president of Lockheed Martin’s Radar and Sensor Systems, “This delivery is a major milestone in getting next-generation radar capability to the warfighter to address the threats of today and tomorrow. Sentinel A4 expands battlespace awareness and improves layered defense against cruise missiles, unmanned aerial systems, and rotary- and fixed-wing threats in complex environments.”

The Sentinel A4 radar system is designed to replace the currently fielded Sentinel A3 radar with a modern, 360-degree Active Electronically Scanned Array (AESA) sensor. This advanced sensor technology provides unparalleled situational awareness and counter target acquisition capabilities, enabling the U.S. Army to effectively defend against a wide range of threats.

The delivery of the first LRIP 2 system marks the culmination of extensive testing and validation efforts conducted by Lockheed Martin. During Initial Operational Test and Evaluation (IOT&E) Phase I, Sentinel A4 integrated with Forward Area Air Defense Command and Control (FAAD-C2), demonstrating the effectiveness of its open-architecture design and interoperability across multiple command-and-control networks.

This milestone delivery builds upon the success of Lockheed Martin’s previous delivery of Sentinel A4 radars, highlighting the company’s ability to consistently meet program requirements. The U.S. Army has ordered 19 LRIP 2 systems, with production expected to support full-rate production in the near future.

The Sentinel A4 radar system is designed to operate seamlessly within the U.S. Army’s current and future command-and-control networks, ensuring a unified battlefield experience for troops. Its advanced sensor capabilities will be critical in detecting and tracking targets across complex environments, making it an invaluable asset in modern warfare scenarios.

Lockheed Martin’s extensive experience developing and delivering advanced radar solutions has positioned it as a leader in the defense technology sector. With broad and deep experience in designing, manufacturing, and integrating radar systems, Lockheed Martin’s high-performing, high-reliability radar systems specialize in advanced early warning, counter target acquisition, situational awareness, and integrated air and missile defense.

The company’s commitment to innovation is reflected in its 21st Century Security vision, which drives the delivery of transformative technologies that accelerate scientific discovery and support the warfighter. Lockheed Martin’s mission solutions span all domains, from air and missile defense to cyber security and logistics.

As the U.S. Army continues to deploy Sentinel A4 radars, it will play a critical role in enhancing the country’s military capabilities. The system’s ability to detect and track targets across complex environments makes it an essential component of modern warfare scenarios.

The success of Lockheed Martin’s Sentinel A4 program underscores the company’s commitment to delivering cutting-edge defense technology that addresses emerging threats. As the defense landscape continues to evolve, companies like Lockheed Martin will remain at the forefront of innovation, driving advancements in radar systems and other critical defense technologies.

With the delivery of the first LRIP 2 system, Lockheed Martin has demonstrated its ability to meet program requirements and deliver advanced defense technology to support the warfighter. The company’s continued commitment to innovation and quality will be essential in ensuring the success of the Sentinel A4 program and its impact on modern warfare scenarios.

The U.S. Army’s adoption of Sentinel A4 radars marks a significant milestone in the country’s efforts to enhance its military capabilities. As the defense landscape continues to evolve, it is likely that advanced radar systems like Sentinel A4 will play an increasingly critical role in supporting the warfighter’s mission.

Lockheed Martin’s Sentinel A4 program serves as a prime example of the company’s commitment to delivering cutting-edge defense technology that addresses emerging threats. The company’s experience and expertise in designing, manufacturing, and integrating radar systems position it well to support the U.S. Army’s fielding plans and operational testing.

The success of Lockheed Martin’s Sentinel A4 program highlights the importance of investing in cutting-edge defense technologies that address modern warfare scenarios. As the U.S. Army continues to deploy Sentinel A4 radars, it will remain a critical component of the country’s military capabilities, providing unparalleled situational awareness and counter target acquisition capabilities.

With the delivery of the first LRIP 2 system, Lockheed Martin has taken a significant step forward in its efforts to support the warfighter. The company’s continued commitment to innovation and quality will be essential in ensuring the success of the Sentinel A4 program and its impact on modern warfare scenarios.

The future of defense technology looks bright with companies like Lockheed Martin leading the way. As the defense landscape continues to evolve, it is likely that advanced radar systems like Sentinel A4 will play an increasingly critical role in supporting the warfighter’s mission.

In order to address emerging threats, military forces must have access to cutting-edge technologies like Sentinel A4 radars. These advanced systems provide unparalleled situational awareness and counter target acquisition capabilities, making them essential components of modern warfare scenarios.

The delivery of the first LRIP 2 system marks a significant milestone in the U.S. Army’s efforts to enhance its military capabilities. Lockheed Martin’s commitment to delivering cutting-edge defense technology that addresses emerging threats will be critical in ensuring the success of the Sentinel A4 program.

As the defense landscape continues to evolve, companies like Lockheed Martin will remain at the forefront of innovation, driving advancements in radar systems and other critical defense technologies. The company’s continued commitment to quality and innovation will be essential in ensuring the success of the Sentinel A4 program and its impact on modern warfare scenarios.

The U.S. Army’s adoption of Sentinel A4 radars underscores the importance of investing in cutting-edge defense technologies that address emerging threats. Lockheed Martin’s Sentinel A4 program serves as a prime example of the company’s commitment to delivering advanced defense technology that addresses the warfighter’s needs.

With its advanced sensor capabilities and open-architecture design, Sentinel A4 is poised to play a critical role in modern warfare scenarios. The system’s ability to detect and track targets across complex environments makes it an essential component of the U.S. Army’s military capabilities.

Lockheed Martin’s experience and expertise in designing, manufacturing, and integrating radar systems position it well to support the U.S. Army’s fielding plans and operational testing. The company’s commitment to innovation is reflected in its 21st Century Security vision, which drives the delivery of transformative technologies that accelerate scientific discovery and support the warfighter.

The future of defense technology looks bright with companies like Lockheed Martin leading the way. The company’s continued commitment to innovation and quality will be essential in ensuring the success of the Sentinel A4 program and its impact on modern warfare scenarios.