Mike O'Leary (Right) shares an "Official Plug Puller" certificate given to his father Bob at the dedication of Barkley Dam 50 years ago with Lt. Col. Stephen Murphy, U.S. Army Corps of Engineers Nashville District commander, during the reception following the commemoration marking the 50th anniversary of Barkley Dam Aug. 20, 2016. Mike and his dad rode through the lock and Barkley Canal.