Transcript for Black Hawk Helicopter Crash Kills 11 in Afghanistan
And we head overseas too u.S. Forces fighting the long war in afghanistan. A black hawk helicopter crashed, killing everyone on board. Seven u.S. Troops, three afghans and an interpreter. And abc's martha raddatz has been looking into what happened tonight. Reporter: Diane, it's not certain that a helicopter was shot down but there were no weather problems, no indications from the pilot of mechanical failure and the helicopter was flying deep in enemy territory. This was a special missions operation with two navy s.E.A.L.S and navy explosive experts and three forces flying in northern kandahar. An afghan interpreter inside. The black hawk, one of two on a mission, went down in rigid terrain at 10:30 this morning. Going down in flames and badly mangled. As soon as it was down, enemy forces headed to the crash site. But they were fired on by another u.S. Helicopter. U.S. Teams then moved in on the ground to recover the body and begin the investigation. The taliban claim they shot it down. We're out on the right side. Reporter: They know how vital helicopters are to america's mission in afghanistan, given the mountainous terrain. It was just last year that a chinook helicopter was hit by a rocket-propelled grenade, killing 30 americans, including 22 from a navy s.E.A.L. Unit. ROCKETS, RPGs, ALL OF THOSE Types of weapons really can get at a helicopter. They have good defenses on board but they're not perfect. The commandant of the marines told them that they're winning in afghanistan, but with 18 days left, it probably doesn't feel like that to some u.S. Forces. Martha, it brings the ten-year death to to 2,084 u.S. Troops. Thank you, martha raddatz.
This transcript has been automatically generated and may not be 100% accurate.