U.S. Special Operations Forces conducted a joint U.S.-Somali helicopter raid against the terrorist group al-Shabab in Somalia on Tuesday, according to U.S. defense officials.

A defense official, who spoke on the condition of anonymity to discuss the operation because it had not been made public, said that there were no U.S. or Somali casualties.

Pentagon spokesman Navy Capt. Jeff Davis, said that the U.S. role in the raid was strictly in an advisory capacity and that U.S. forces did not accompany the Somali troops to the objective. Davis would not say what that objective was, though he did specify that the aircraft used in the raid were American.

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