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. Last Updated: 07/27/2016

Chopper Downed

FALLUJAH, Iraq -- Insurgents shot down a U.S. Chinook helicopter in central Iraq on Sunday as it carried troops headed on leave, killing 15 soldiers and wounding 21 in the deadliest single strike against American troops since the start of war.

The attack by a shoulder-fired missile was a significant new blow in an Iraq insurgency that escalated in recent days -- and the U.S. occupation chief acknowledged anti-U.S. forces were getting more sophisticated in their attacks.

Other attacks, in Fallujah and Baghdad, killed another U.S soldier and two American civilians.