# Northrop Grumman Delivers Satellites to Vandenberg SFB

Northrop Grumman has completed delivery of 21 Transport Layer satellites to Vandenberg Space Force Base as part of Tranche 1 for the U.S. Space Force Space Development Agency's (SDA) Proliferated Warfighter Space Architecture. This milestone advances the deployment of a planned constellation of 126 low-Earth orbit satellites designed to enhance secure military communications and missile deterrence capabilities. The delivery supports SDA's strategic objective to modernize space-based communications infrastructure critical to defense operations.

- The Transport Layer constellation represents a significant procurement opportunity for contractors specializing in satellite manufacturing and space systems integration.
- Agencies and industry stakeholders should note the ongoing multi-tranche deployment schedule, indicating future contract awards and sustainment opportunities.
- This development underscores the importance of secure, resilient space communications in defense procurement planning and technology investment.
- Companies with capabilities in low-Earth orbit satellite technology and secure communications systems may find increased demand aligned with SDA's modernization efforts.

**Jurisdictions:** federal
**Industries:** Defense & Military
**Topics:** Physical Infrastructure
**Published:** September 28, 2026

### Government Entities
- U.S. Space Force Space Development Agency (SDA)
- Vandenberg Space Force Base

### Vendors
- Northrop Grumman (prime contractor)

### Sources
- [21 Tranche 1, Transport Layer Satellites Delivered to Vandenberg, Northrop Grumman Says - Defense Daily](https://www.defensedaily.com/21-tranche-1-transport-layer-satellites-delivered-to-vandenberg-northrop-grumman-says/space) - Defense Daily