New York family find missing son

Nick Simmons had been missing for days. His family found him after this AP photo appeared in USA Today Sunday. 

The man, who only gave his first name -- Nick -- was a face in a crowd of homeless people huddling to stay warm on a Washington street, just blocks from the U.S. Capitol.

But all that changed when the photograph appeared in USA Today Sunday.

(By Haley Draznin and Catherine E. Shoichet, CNN)