A special 624 Polar Bear Express powered by GP38-2's 1806 & 1808 along with APU 203, baggage 413, and 4 unilevels (one of which is a diner) rolls past mile 4 of the Island Falls Subdivision on August 31st. When this train arrives at Cochrane, the official "423" Excursion service wraps up for the year with "421" service resuming on Monday, September 2nd.