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*Brain mutations are specifically outlawed by the UNSC Medical Corps.Halo: Ghosts of Onyx - page 108
*Colonel Ponder leads a force into Elysium city to retrieve an 'Innie'. A confrontation develops and due to an over-eager sniper, a grenade is detonated causing Ponder to lose his arm and be demoted.Halo: Contact Harvest - page 112
*Latest possible release of Pelican and Warthog series to the UNSC.Halostory.bungie.org - Frank O'Connor/Robt McLees Interview - August 2008
*Alexander becomes the sixth captain of the UNSC Spirit of Fire
==Sources==