Hunting Bomb-Makers

​Materials recovered from a blast site can provide vital intelligence
about a bomb and its maker. In this undated photo, an analyst studies
material from an improvised explosive device at an FBI laboratory.

The rise of the improvised explosive device (IED) as a weapon of choice for terrorists and insurgents has increased the need to develop countermeasures. Countering bombs in the field is one element of any response, but perhaps more important are efforts to identify the networks...