In this hand out photo released by US military, Iraqi Soldiers from the 101st Combat Aviation Brigade, 101st Airborne Division stand ready with a staged row of Blackhawk helicopters in preparation for Operation Swarmer, in Remagen, Iraq, Thursday, March 16, 2006. US forces, joined by Iraqi troops, on Thursday launched the largest airborn assault in nearly three years, targeting insurgent strongholds north of the capital, the military said. The Operation Swarmer was aimed at clearing 'a suspected insurgent operating area' northeast of Samarra and was expected to continue over several days. [AP Photo]

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