The CSL Niagara is departing from Lock 4 downbound on the Welland Canal. High above it in Lock 6 is the Peter D. Leitch which has begun its descent as the lock is emptied. The bridge of the tug Petite Forte, upboundLock 5, is visible as the lock fills lifting it to the level of Lock 5. Just another day, July 17, 2007, at the Welland Canal.