The UNSC Ready or Not was a United Nations Space Command frigate. It was patrolling the 18 Scorpii system for Covenant activity when it picked up unusual slipspace readouts.
The 6 mile long "Covenant Battle Fleet" turned out to be the remains of The Rubble, a hollowed-out Asteroid with a Slipspace drive.
- ↑ Halo: The Fall of Reach - page 111
- ↑ 2.0 2.1 Halo: The Cole Protocol - page 343-344