Spectre

Special forces in Modern Warfare 3, who take oppotunities to finish off their enemies in either stealth or marksmenship.

Glassgaw - Stealth operative, Spectre. - Does the backstabbing, and infiltrates the enemy base from behind.
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Black Hand - Assault team. - Same role as Swats.
Swat - Assault team. - Heavy operating, roam with Black hand and initiate combats within the field.
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Biscuit - Support team, provides team with air and ground support.