Investigators are looking into the cause of Saturday's helicopter crash at the Army's National Training Center at Fort Irwin.  The "San Bernardino Sun" says the "A-H" 64 copter went down around 1 a.m. during pre-deployment training operations at the base located just outside Barstow.  Military officials say the two soldiers who were on board the aircraft were killed in the crash.  

Both were assigned to the Fourth Infantry Division in Colorado.  Their names were not released.

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