by SpaceX USA

SDA Tranche 1 Tracking Layer C

Planned 2026 Q3

Third of five launches deploying the Space Development Agency's Tranche 1 Tracking Layer. The satellites, built by L3Harris and Northrop Grumman, carry wide field-of-view infrared sensors for persistent warning, tracking, and targeting of advanced missile threats, including hypersonic glide vehicles.

Launch part of the National Security Space Launch Phase 2 contract awarded in 2022.

launching from SLC-4E Vandenberg

aboard Falcon 9 B5 into LEO

Payload

T1TR-C x 7

Missile tracking

last updated Jun 28, 2026