SDA awards $3.5B to four suppliers for 72 Tranche‑3 missile‑tracking satellites
The Space Development Agency has awarded about $3.5 billion to four suppliers to build 72 Tracking‑Layer satellites for Tranche 3 of its Proliferated Warfighter Space Architecture, expanding missile warning, tracking and defense capabilities fielded in earlier tranches. Northrop Grumman is among the companies awarded TRKT3 work.