He didn't introduce himself. He didn't have to. President Obama simply stuck out his hand and asked for my name as he stepped toward me amid a bone-chilling drizzle in the Gardens of Stone. This was Section 60 of Arlington National Cemetery. I wasn't there as a reporter, but to visit some friends and family buried there when Obama made an unscheduled stop - a rare presidential walk among what Lincoln called America's "honored dead" - after laying a Veterans Day wreath at the Tomb of the Unknowns. What I got was an unexpected look into the eyes of a...