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Northrop's First 21 Satellites Join Pentagon's Space Data Network
Northrop Grumman's first 21 satellites for the U.S. Space Development Agency's Tranche 1 Transport Layer launched aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base on October 10, 2026. The low-Earth-orbit spacecraft are designed to form part of the Pentagon's proliferated communications network, using optical inter-satellite links and tactical data connections to relay information among military users and sensors. The launch contributes to a multivendor constellation that includes spacecraft from additional suppliers, with further Northrop satellites planned under its 42-spacecraft award. Successful insertion into orbit begins checkout and network integration; it does not by itself confirm full operational service.