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...

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