Twin towers en 9-11: Where were you? <p>It's Sept 11, 2013. Today marks the twelfth anniversary of the worst terrorist attack in U.S. history. Many people remember exactly what they were doing at the moment they heard what had happened. Do you? Wed, 11 Sep 2013 12:00:00 +0000 Daniel Starks 42697 at 9-11: Where were you?