Sonic grenade

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Sonic grenades are a United Nations Space Command explosive. Several of them were used in the obstacle course set up by Colonel James Ackerson for John-117's and Cortana's first test with smart AI integration with the MJOLNIR Mark V armor on Reach, hidden amongst the Pillars of Loki and used in conjunction with napalm grenades.[1]

List of appearances[edit]

Sources[edit]

  1. ^ Halo: The Fall of Reach, page 262