While attacks involving sophisticated, armor-piercing roadside bombs have ebbed recently in Iraq, coalition forces in Afghanistan are seeing a rise in the use of more primitive roadside bombs, the general overseeing the Defense Department's efforts to counter improvised explosive devices said today. Army Lt. Gen. Thomas Metz said the decline in attacks involving so-called explosively formed penetrators is due in part to the efforts of the Joint Improvised Explosive Device Defeat Organization, which he oversees. "We found some caches, and...