I wish I knew the contact information for Larry Pravacek, who did the back seat flying to place the CN Tower in place. Larry had joined SA from the 101st in Vietnam, and after 7 or so years with us, left with the other S-64 team to work at Erickson. To this day I watch that video of him doing the tower and marvel at how smoothly it takes place, with ZERO references close at hand. If he or one of his compatriots reads this, perhaps they can suggest that he checks in here and describes how on earth he accomplished it.