The Department of Defense official announcement:

The Department of Defense announced toda annouced the death of a the death of a Marine who was supporting Operation Enduring Freedom. 

 Lance Cpl. Edward J. Dycus, 22, of Greenville, Miss., died Feb. 1 while conducting combat operations in Helmand province, Afghanistan.  He was assigned to the 2nd Battalion, 9th Marine Regiment, 2nd Marine Division, II Marine Expeditionary Force, Camp Lejeune, N.C. 

This incident is under investigation.

The Jackson Clarion Ledger's report:

Mississippi's first casualty this year from the war in Afghanistan died at the hands of an Afghan soldier who was guarding a joint operating base with him in the Helmand province, officials said. ...

"He's not just another dead soldier," said childhood friend Kayla Bevill. "He wasn't killed by 'the enemy.' He was killed by someone that was supposed to be helping him guard, and that's what hurts the most."

Next most hurtful thing is the DoD's Big Lie machine in action. "Combat operations"?