The United States Army plans the first full deployment of the new air defense radar Sentinel A4 in the National Capital Region, covering Washington, D.C.
The system represents a technological leap over previous versions, with increased detection range and improved performance against low- or slow-flying threats, such as cruise missiles and drones. Full-scale production is scheduled for the end of fiscal year 2026, while operational introduction in the region is expected throughout 2026.
According to military authorities, one Sentinel A4 unit will be deployed as early as January to begin integration with existing defense systems in the capital. The Army already operates a radar of the same model in South Korea on an initial basis, an experience that has been used to collect data and adjust plans before final deployment in the U.S. territory. Currently, Sentinel variants already operate in conjunction with systems such as NASAMS and Avenger to protect NCR airspace.
The Sentinel A4 is capable of 360-degree air surveillance, day and night, even in adverse weather conditions, identifying and tracking aircraft, drones, cruise missiles, and even artillery projectiles. The new radar offers about a 75% increase in range compared to the previous model, while simultaneously tracking a much larger number of targets thanks to AESA technology. Part of its capabilities remains classified, but the Army highlights that the system still has room for future improvements.
Choosing the capital as the operational debut point reflects the priority given to defending the country’s most sensitive airspace, in a context of growing concern over modern aerial threats. The rise of drones and increasingly sophisticated cruise missiles drive investments in new sensors and defense systems.
In addition to the NCR, the Army plans to employ the Sentinel A4 globally, integrating it into programs like Enduring Shield and reducing the strain on Patriot systems, which are currently in high demand.
Source: The War Zone | Photo: X @LockheedMartin | This content was created with the help of AI and reviewed by the editorial team
