where to use a redeploy drone to free fall or parachute to a different threat zone

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how to 'use a redeploy drone to free fall or parachute to a different threat zone' MWZ | Ascension

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MWZ 'ASCENSION' USE A REDEPLOY DRONE TO FREE FALL OR PARACHUTE TO A DIFFERENT THREAT ZONE! MW3

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COD MW3 Zombies, Ascension Solo mission guide (Act 2, Tier 2, Mission 2)