November 27th, 2009
10:58 AM ET

IED challenges in Afghanistan

Revisiting the 4th Engineer Battalion, a U.S. unit deployed to Afghanistan six months ago, CNN's Frede Pleitgen reports on their changes and challenges. The unit has lost 11 men in Afghanistan, most of them to IEDs, or improvised explosive devices.

Watch the report from CNN's Fred Pleitgen in Afghanistan