BAGHDAD, Iraq, April 9, 2007 — Staff Sgt. Darin Morgan’s platoon had just snatched a suspected insurgent off the streets. They had done it without Apache gun ships hovering overhead and without Stryker vehicles blocking the roads. They did it without blowing open any doors or damaging any property. And they did it without firing a single shot. All of which, Morgan said, means they did it the right way. "We live here. If we have to go in hard, we still have to come back the next day. So if we can take an insurgent off the streets with...