David Welna June 28, 2012 Updated January 08, 2016 20120628_atc_07.mp3?orgId=1&topicId=1014&d=269&story=155936575&ft=nprml&f=155936575 Listen • 4:30 20120628_atc_07.mp3?orgId=1&topicId=1014&d=269&story=155936575&ft=nprml&f=155936575 Copyright 2016 NPR. To see more, visit http://www.npr.org/ . David Welna