A Minnesota man who was on the Northwest Airlines flight diverted to Amsterdam Wednesday after air marshals grew suspicious of passengers had prior experience with terrorist plots. Tim Nelson, the flight instructor who first told FBI officials about Al-Qaida operative Zacarias Moussaoui’s presence and behavior at an Eagan flight school in August, 2001, was on the Northwest flight, according to his wife, Jodie. Nelson’s call helped authorities arrest Moussaoui that same August, but the investigation that followed failed to thwart the Sept. 11 terrorist attacks. Regarding Wednesday’s incident, Mrs. Nelson said her husband specifically noted the crew and air marshals’...