Space & Satellites
Lockheed Martin Awarded $1.1B Contract for SDA Tranche 3 Satellites
Lockheed Martin secured a $1.1B contract to build 18 Tranche 3 satellites for the Space Development Agency’s missile tracking and defense network.
This article is based on an official press release from Lockheed Martin.
Lockheed Martin (NYSE: LMT) has been awarded a major contract with a potential value of approximately $1.1 billion by the Space-Agencies (SDA). Announced on December 19, 2025, the agreement tasks the aerospace giant with producing 18 space vehicles for the Tranche 3 Tracking Layer (TRKT3) constellation. These satellites are a critical component of the Proliferated Warfighter Space Architecture (PWSA), a network designed to detect, track, and target advanced missile threats, including hypersonic systems.
This award represents a significant portion of a broader $3.5 billion investment by the SDA, which simultaneously issued Contracts to Rocket Lab, Northrop Grumman, and L3Harris. Together, these companies will construct a combined total of 72 satellites. According to the announcement, Lockheed Martin’s specific allotment of satellites is scheduled for launch in Fiscal Year 2029.
Under the terms of the agreement, Lockheed Martin will deliver 18 missile warning, tracking, and defense space vehicles. Unlike traditional legacy programs that often take a decade to field, the SDA operates on a rapid “spiral development” model, fielding new generations, or “tranches”, every two years. Tranche 3 is particularly significant as it represents the “Sustained Capability” generation, designed to replenish and replace earlier satellites while introducing advanced fire-control capabilities.
The satellites will be manufactured at Lockheed Martin’s SmallSat Processing & Delivery Center in Colorado. The company confirmed that Terran Orbital will continue to serve as a key supplier, providing the satellite buses. This continuation of the supply chain partnership aims to maintain production stability across the various tranches.
A defining feature of the Tranche 3 Tracking Layer is the inclusion of “fire-control quality” tracking. While previous iterations focused primarily on warning and tracking, half of the payloads in this new constellation are designated for missile defense. This means the satellites can generate data precise enough to guide an interceptor to destroy a threat, rather than simply monitoring its trajectory.
“The Tracking Layer of Tranche 3… will significantly increase the coverage and accuracy needed to close kill chains against advanced adversary threats. The constellation will include a mix of missile warning and missile tracking, with half the constellation’s payloads supporting advanced missile defense missions.”
Gurpartap “GP” Sandhoo, Acting Director, Space Development Agency
With this latest award, Lockheed Martin’s total backlog with the SDA has grown to 124 space vehicles across multiple tranches. This reinforces the company’s position as a dominant player in the rapid-acquisition space sector. The SDA’s strategy involves splitting awards among multiple vendors to foster competition and reduce industrial base risk. The $3.5 billion total funding for Tranche 3 was distributed as follows:
Lockheed Martin and Rocket Lab received higher contract values, which industry analysts attribute to the complexity of the defense-specific payloads included in their respective lots.
“Lockheed Martin’s ongoing investments and evolving practices demonstrate our commitment to supporting the SDA’s Proliferated Warfighter Space Architecture. These innovative approaches position Lockheed Martin to meet the warfighter’s urgent need for a proliferated missile defense constellation.”
Joe Rickers, Vice President of Transport, Tracking and Warning, Lockheed Martin
The awarding of the Tranche 3 contracts highlights a pivotal shift in U.S. defense strategy toward “proliferated” architectures. By deploying hundreds of smaller, cheaper satellites rather than a handful of large, expensive targets (“Big Juicy Targets”), the U.S. Space Force aims to increase resilience against anti-satellite weapons. If an adversary destroys one node in a mesh network of hundreds, the system remains operational.
Furthermore, the explicit mention of “fire-control quality tracks” signals that the PWSA is moving from a passive observation role to an active engagement support role. This is a direct response to the development of hypersonic glide vehicles by peer adversaries, which fly too low for traditional ground-based Radar-Systems to track effectively. The reliance on Terran Orbital for satellite buses also underscores the critical nature of supply chain continuity; as production rates increase to meet the two-year launch cycles, prime contractors are prioritizing established supplier relationships to minimize delay risks.
Lockheed Martin Secures $1.1 Billion Contract for SDA Tranche 3 Tracking Layer
Contract Specifications and Deliverables
Advanced Fire-Control Capabilities
Strategic Context and Industry Landscape
AirPro News Analysis
Frequently Asked Questions
Sources
Photo Credit: Lockheed Martin