A CNN helicopter crashes in U.S. , a Afghanistan military official says . A Black Hawk helicopter crashed Thursday in southern Afghanistan , likely killing all four of its crew members -- all of them Americans -- a U.S. military official said . All 12 of its crew members -- all of them Afghan -- are believed to be dead . Troops waiting to be picked up saw the aircraft go down , the official says .
A CNN helicopter crashes in U.S. , a Afghanistan military official says . All 12 of its crew members -- all of them Afghan -- are believed to be dead . Troops waiting to be picked up saw the aircraft go down , the official says .