Controlled Demolition, Inc. (CDI) of Phoenix, Maryland, USA (acting as Main Demolition Contractor to the Property Owner, Gettysburg National Military Park/ Eisenhower National Historic Site of Gettysburg, Pennsylvania) performs the successful explosives felling of the 393’ tall, structural steel observation tower at 5:03 PM on Monday, July 3, 2000 to commemorate the 137th anniversary of the end of the Battle of Gettysburg.