Aside from being killed by the Afghan troops they're tasked with training, the number one cause of death for U.S. troops in Afghanistan is IEDs.

Improvised explosive devices can be made from virtually anything, detonated in any number of ways, and are nearly impossible to detect. The Taliban managed to lay 16,000 IEDs last year alone, and should exceed that number this year.

That means if a servicemember does any work "outside the wire" it's not a matter of if he'll be exposed to a device, it's a matter of when.

This short, first-person video shows how suddenly that moment comes and what it looks like from the inside looking out.