In this hand out photo released by US military, Iraqi Army Soldiers of 4th Iraqi Army Division exit a CH-47 Chinook helicopter in support of Operation Swarmer in Samarra, 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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