Go bang the window and see what happens — just test it. See that? Trudeau had the office bulletproofed. I always contended that the reason he did it was because the American embassy is right outside. They probably wanted to shoot him.

Newman, Peter (2005). The Secret Mulroney Tapes: Unguarded Confessions of a Prime Minister. Toronto: Random House Canada. ISBN 0-679-31351-6., p. 331.