ABC's David Muir goes inside Iraq as US hunts ISIS fighters.

[the other mike]

It's a dirty job, but someone's gotta do it.

U.S. forces search caves, mountains and villages in their fight to stamp down efforts by ISIS to rebuild and restrengthen the terrorist group.

 

[airplanemechanic]

If one lucky Taliban could get Muir in his sights......

 

[the other mike]

If one lucky Taliban could get Muir in his sights......

The Taliban has expanded to Iraq ?