July 12, 2013 Updated January 09, 2016 20130712_sf_07.mp3?orgId=1&topicId=1026&d=507&story=201461181&ft=nprml&f=201461181 Listen • 8:27 20130712_sf_07.mp3?orgId=1&topicId=1026&d=507&story=201461181&ft=nprml&f=201461181 Copyright 2016 NPR. To see more, visit http://www.npr.org/.