Acquiring signal…
T-minus to liftoff
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00
HOURS
:
00
MINUTES
:
00
SECONDS
2026
StatusTBD
VehicleVulcan
OrbitPolar Orbit
PadSpace Launch Complex 3E
Pre-flight room
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Mission
Tranche 1 Tracking Layer B is one of five missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Tracking Layer constellation, which will provide global indications, warning, tracking, and targeting of advanced missile threats, including hypersonic missile systems.
Quick facts
VehicleVulcan
OrbitPolar Orbit
PadSpace Launch Complex 3E
SiteVandenberg SFB, CA, USA
WindowThursday December 31 2026, 00:00:00 UTC→Thursday December 31 2026, 00:00:00 UTC
Vehicle
FamilyVulcan