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U.S. Army bases on high alert for ISIS attack

Name: U.S. Army bases on high alert for ISIS attack
Uploaded: 2015-05-08T16:19:18-0400
Duration: 3 min 51 s
Description: The threat level at U.S. military bases across North America has been raised. CBS News Pentagon correspondent David Martin explains the increased threat of terrorist activity.

The threat level at U.S. military bases across North America has been raised. CBS News Pentagon correspondent David Martin explains the increased threat of terrorist activity.