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UNSC Ultimatum
Vital statistics
Map Used Modified Forge World
Location Reach
Inhabitants Strike-team Orion, Strike-team Vector, Strike-team Iron, Dust, Shadow, Strike-team Rewind
UNSC Presence? No

The UNSC Ultimatum is a Paris-Class Heavy Frigate. It was recalled to Reach to help protect it from the Covenant fleet, however it was boarded and stolen by Strike-team Vector. It was destroyed by an Anaconda Surface-to-Air Missile Launcher.