On this day: September 17

POSTED: 1:49 PM Sep 14 2012   UPDATED: 1:00 AM Sep 17 2013
Civil War, Battle of Antietam painting

The U.S. Constitution is signed, the Civil War sees the bloodiest battle in American history, the prototype space shuttle Enterprise is unveiled, and the Camp David Accords bring peace between Egypt and Israel, all on this day.