Detailed text transcripts for TV channel - KGO - 20170415:00:36:00
The largest conventional weapon the u.s. has ever deployed in combat, targeting isis. afghan commando patrols with u.s. support combing through the area now. assessing the damage, and searching for information. tonight, the questions, what did the strike accomplish, and at what cost? terry moran in london tonight. >> reporter: the pentagon video shows the immense destructive power of this weapon, devastating an entire mountain valley. the boiling plume of smoke quickly turning into a mushroom cloud, rising over the massive blast area. take another look. the quiet valley, then you can see the b...
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