David Othen caught VIA 15 leaving Halifax with CN 4721 leading VIA 6437 and 6416 today. Apparently 6437's engine had problems and so the Geep was pressed into service. An engineer had to ride in 6416 to monitor the train alarms.
They met CN 120 at Sandy Cove, NS. CN 120 had CN 8808, 2572 and 2564.
David posted video on YouTube.
Thanks, David! Be sure to visit his site to see the great videos he has for sale.