APRIL 25, 2010 2:02 AM SNIPPET: "MONTREAL — A British Airways flight bound for London was reportedly held up for almost two hours on the tarmac at Montreal's Pierre Elliott Trudeau airport Saturday night as officials questioned a passenger who exhibited suspicious behaviour just before the plane was scheduled to take off." SNIPPET: "Fellow passengers reportedly told the cabin crew that the man had been behaving oddly and was in possession of a small quantity of clear liquid. "It was more than what you would normally be allowed to have, and passengers said he was doing something suspicious with it,"...