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Checkpoint Rhoen is a border security checkpoint on Sedra.
On January 24, 2556, security at the checkpoint was forced to enact eight seizures on incoming ships, one of which yielded highly refined fissile material. The pilot was arrested and the material was brought to a Sedran laboratory for testing. In response to the influx of passing attempts at the planetary borders, Laban Neir of Rhoen Border Security requested an increase in equipment and personnel. At some point, the UNSC was notified of the fissile discovery. On February 3, 2556, Checkpoint Rhoen was given management of planetary access in sectors four, five, and seven after two Office of Naval Intelligence D79-TC Pelicans were sent to Sedra.
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